Wendy O. Koopa

Wendy O. Koopa (known as Kootie Pie Koopa in the cartoons) is the sole female of the Koopalings, a seven-member clan that personally follows Bowser. Wendy and the other Koopalings were originally depicted as Bowser's children. This idea was usually omitted in games released after their debut in Super Mario Bros. 3, and Shigeru Miyamoto stated in a 2012 interview that Nintendo's current story was that they are not Bowser's children, leaving Bowser Jr. as his only offspring. She was named after famous musician Wendy O. Williams, lead singer of the punk band the Plasmatics.

Super Mario Bros. 3
In Super Mario Bros. 3, the Koopalings were in charge of taking over the various kingdoms of the Mushroom World; Wendy decided to take over the kingdom of Water Land. Easily taking over Ocean Side with her Airship and armies, Wendy stole the magic wand of Ocean Side's king and changed him into a Spike or a Dino Rhino, depending on the version of the game. In addition, she also took to observing Mario's actions closely in the inevitability that she will fight Mario, as this was her first encounter with him.

Traveling through the lakes of Ocean Side, Mario managed to reach Wendy's airship. Passing all of Wendy's troops and defenses, Mario made his way into the spoiled Koopaling's cabin. Wendy tried to defeat Mario by tackling him and shooting giant rings of candy at him. After two hits she would begin to start jumping around the room, while still throwing Candy Rings; these attacks were to no avail, and Wendy was eventually defeated.

Super Mario World
In Super Mario World, during Bowser's invasion of Dinosaur Island, Wendy took over Chocolate Island. Venturing inside Wendy's fortress, Mario managed to pass all the skewering defenses inside its walls and reached Wendy's chamber.

In battle, Wendy would utilize the same attack pattern as Lemmy; she would pop-out of a random Warp Pipe with two "Wendy Dolls" popping-out of two other pipes. Mario would have to dodge two wayward Podoboos and bash Wendy three times to dunk her into lava and defeat her.

New Super Mario Bros. Wii
Wendy and the rest of the Koopalings appear as bosses in New Super Mario Bros. Wii. She appears to be the only one of the seven original Koopalings who has not gone through any major design changes for the game. She appears as the boss of World 4.

The stage for her tower battle is an ordinary rectangle room with no obstacles.

Before battling her, she is surprised and shocked that the player(s) got past all her troops and traps. She then throws her wand high into the air while she twirls around and perfectly catches it. She then battles the player.

In both of her fights, she uses her magic wand to generate rings that rebound from the walls (it dissolves after a set period of time). After conjuring a ring, she "ballet jumps" after the player(s) a few times before casting another ring. Each time she is hit, she retreats into her shell and spins/slides it to the right and left of the room in an attempt to hit the player(s) along with the remaining rings. She also jumps faster and higher after the player(s) and double casts her rings when she is stomped on for the second time. When she is defeated by the third jump, she retreats back to her castle.

In the castle battle, Wendy attacks in a similar manner to her tower battle, but at the beginning of the battle, Kamek causes the room Wendy is fought in to flood periodically. The flood prevents the player(s) from jumping on her due to not enough pressure from the jump, so instead, the player(s) will have to evade all the rebounding rings and of course Wendy herself and wait for the flood to drain away; only then is when she is vulnerable (though fireballs could attack her during the flood). The flood not only slows the movement of the player(s), but also that of Wendy and her rings. When Wendy is defeated, she falls off-screen and Mario gets the key to World 5.

Wendy survived the battle, however, and was seen along with the other Koopalings getting Bowser back up, only to have Bowser's castle fall on top of all of them but she survived.

New Super Mario Bros. 2
Wendy, as well as the rest of the Koopalings, reappears in New Super Mario Bros. 2 as the boss of World 3's castle. She'll throw her wand and perform a twirl before catching the wand, like in the previous game, before battling Mario once again. Much like in New Super Mario Bros. Wii, her battle once again takes place underwater, although this time, there are four blue pipes (two on each wall) where groups of three Cheep-Cheeps swim out when Wendy jumps through the water. Two Cheep-Cheeps also jump from the water while she attacks in her shell. She also needs to whistle in order to fill the room up with water and to get rid of it. After a short period of time, the water disappears, but it comes back again if Wendy is stomped on. After three stomps on her head, Wendy is defeated, leaving behind the key to World 4.

The Koopalings are later revealed to have survived, however, and proceeded to attack Mario throughout Bowser's castle by firing spells that will turn him to stone if hit, and later aided Bowser when he was first defeated. After his final defeat, the Koopalings attempted to airlift him, but his size exceeded the Koopa Clown Car's carrying capacity, flinging them throughout the trees and the floor. Wendy herself was seen next to Ludwig, sulking.

It appears that Wendy is the only Koopaling in New Super Mario Bros. 2 who doesn't use her magic wand in combat even though she has it in her hand; instead, she whistles to summon Cheep Cheep like a Chargin' Chuck. Also, Wendy does not fire rings from her wand.

Also this is the second time for Wendy to appear as the boss of World 3. The first time being Super Mario Bros. 3.

New Super Mario Bros. U
Wendy returns in New Super Mario Bros. U. She is the Castle boss of Frosted Glacier (she is battled in Wendy's Shifting Castle), and the boss of Boost Rush Mode's Acrobat pack. When Mario arrives at the area her airship is located, Wendy will utter a "nya-nya-ne-nya-nya" phrase. Before battling Mario, she gets surprised then spins around happily in her figure skates to get ready for battle. In her boss battle, she skates around the arena, shooting out two golden rings that ricochet off of walls and can knock down the icicles at the ceiling of the airship. She also spin jumps from walls. After she is jumped on twice, she will shoot out three rings instead. With three hits, she will fall off screen.

Despite this, Wendy survived, and was later picked up along with the rest of the Koopalings by Bowser Jr., although they ended up escaping by hanging onto Bowser's tail after the latter inadvertently destroyed Bowser Jr's (already damaged) ship.

Wendy has her own stylized airship. Her airship has her face as the bow, and her pink colored shell at the deck of the ship. The stern has a red color design, similar to her shell color from her game sprites of Super Mario Bros. 3 and Super Mario World. Like most of the airships, Wendy's airship is equipped with a propeller at the back of her ship as well as another one placed just beneath the crow's nest. The ship is equipped with two cannons, one on each side. There are also pink lids on top of the cannons used for closing and opening them. Wendy's airship has some unique features, having large gold rings around the cannons, and two wooded skis on the bottom, due to her place in Frosted Glacier. The cabin of her airship has feminine designs around the room with heart shaped windows, pink bows at the top of the room, purple curtains hanging against the walls and having a ceiling with flowers drawn on it. The room is also filled with icy floors as well as icicles hanging on the ceiling of the room.

Oddly, for some strange reason, when Wendy enters her shell after being being stomped on, the spinning sound will not start until after she begins to move her shell. All of the other Koopalings have the spinning sound start immediately after being stomped on.

This is the second time for Wendy to not be the boss of a water World. The first time was in Super Mario World.

New Super Luigi U
Wendy O. Koopa appears in New Super Luigi U, where she is battled in the same way as New Super Mario Bros. U. She is battled in Wendy's Thwomp Castle.

Amada Anime Series: Super Mario Bros.
Wendy, as well as her siblings were featured in the Super Mario anime series, a set of three Japanese OVAs. In the Mario retelling of the story "Momotaro", Wendy appears as a minion of Bowser alongside the other Koopalings, aiding him in abducting Princess Toadstool. In "Shirayuki-hime" ("Snow White") Wendy also appears in a similar role and ends up being beaten by Mario.

DIC Cartoons
In The Adventures of Super Mario Bros. 3 and Super Mario World cartoons produced by Nintendo and DIC Entertainment, Wendy was renamed Kootie Pie Koopa. Kootie Pie was a sixteen-year-old spoiled brat, who often whined and complained about everything, just as in the games. Kootie Pie would frequently drive those around her crazy by throwing temper-tantrums and furniture when she didn't get what she wanted. Kootie Pie referred to King Koopa as "Daddykins," as opposed to the other Koopalings calling him "King Dad." She also had particular disdain for Princess Toadstool, whom Kootie Pie saw as a rival.

Kootie Pie appeared in The Adventures of Super Mario Bros. 3 the most out of all the Koopa Kids. Not counting cameos, she appeared in the following episodes of the two series:

The Adventures of Super Mario Bros. 3
Reptiles in the Rose Garden: The entire plot of this episode revolved around Bowser giving Kootie Pie the United States of America as a birthday present. During her reign as Empress of America, Kootie Pie enforced her own wicked laws on the citizens of America until Mario and Luigi rescued the President and warped her back to Dark Land.

The Beauty of Kootie: Kootie Pie and Cheatsy were sent by Bowser to steal oil from the Sultan of Desert Hill. In an attempt to stop Mario and Luigi from exposing them, Cheatsy turned Kootie Pie into a human that Mario fell in love with (though Cheatsy forgot to make her tail disappear, but Mario didn't seem to notice). Kootie Pie then convinced Mario to lure the Sultan, his guard, Princess Toadstool and Toad into the dungeon before Cheatsy transformed her back into a Koopa.

To get revenge, Mario later used Cheatsy's dropped wand to transform Luigi into Casanova Koopa, whom Kootie Pie fell madly in love with until she accidentally turned him back into a human. Angry at Luigi for kissing her, Kootie Pie and Cheatsy chased him into a trap that Mario and the others had set up, prompting them to retreat to the Doom Ship.

Dadzilla: After being scolded by Bowser, Kootie Pie and Big Mouth felt convinced that King Dad wasn't their true father, and ventured to Hollywood to try and find their real one. The two Koopalings used their wands to bring a Madzilla robot to life and convinced him that he was their father. With Madzilla on their side, Kootie Pie and Big Mouth ran amuck in Hollywood until Mario stopped Madzilla by controlling a robot of Madzilla's Mom. With Madzilla no longer on their side, Kootie Pie and Big Mouth returned home.

A Toadally Magical Adventure: Kootie Pie accompanied Bowser, Big Mouth, Bully and Cheatsy on a mission to steal a special wand that was being delivered to the Wizard King of the West. At one point when the Koopas had control of the wand, Kootie Pie used it to enlarge the fence around Toad's House, which prevented Princess Toadstool from leaving.

Kootie Pie Rocks: Jealous that Princess Toadstool was able to attend a Milli Vanilli concert, Kootie Pie threw a tantrum until Bowser agreed to kidnap the duo just for her. Although Kootie Pie was thrilled to receive Milli Vanilli as her own private band, Rob and Fab were outraged at the situation. In disgust, Kootie Pie turned the two of them into accountants.

While eavesdropping, Mario and his friends learned that Milli Vanilli were unable to perform for Kootie Pie without a backup band, and snuck into the castle pretending to be one. Although they were unable to properly play the music for "Girl You Know It's True", Kootie Pie was distracted long enough by the backup band for them to flee from Kastle Koopa with Milli Vanilli. Kootie Pie insisted on getting them back, but Bowser hated their music to the point that he threatened to send her to the dungeon if she tried to bring them back.

Mush-Rumors: Upon learning that there were "aliens" in the Mushroom Kingdom, the Koopalings relayed the message to one-another, exaggerating the story each time, until Kootie Pie herself told Bowser that the aliens were outrageous monsters, prompting Bowser to capture them. Although the aliens were actually a lost human family from Kansas, the Koopas strongly believed that they were in disguise until Kooky proved that they weren't.

Crimes R Us: Crimewave Clyde was taken out of his Real World jail to educate the Koopalings on how to be a big time criminal. Along with her brothers, Kootie Pie went along and committed various crimes until Crimewave Clyde revolted and enlisted the help of Mario and Luigi to stop the Koopalings.

7 Continents for 7 Koopas: Assigning his children to each take over one of the Real World's seven continents, Bowser ordered Kootie Pie to wreak havoc in Europe. To achieve this, Kootie Pie magically altered the artwork at the Louvre to resemble her (i.e. turning the Mona Lisa into the Mona Kootie). Mario later arrived to steal Kootie Pie's wand and undid her damage.

Recycled Koopa: Along with several of her brothers, Kootie Pie was ordered by Bowser to dispose of the trash around Kastle Koopa. Kootie Pie fought with Bully until they decided to dump the trash down a Warp Pipe, which ended up surrounding the Mushroom Castle. Mario then stole and used Hip's wand to send the trash back to Kastle Koopa. This encouraged the Koopalings to order the Sledge Bros. to dump the trash down a Warp Pipe to Brooklyn, which ultimately led to greater problems.

The Venice Menace: Wanting a water park of her very own, Bowser agreed to warp Venice to Dark Land for her very own, using the Doomsub to scare everyone out of the city. Kootie Pie accompanied Bowser on this mission, but they were eventually foiled by Mario and Luigi, who warped the Doomsub to Desert Land. Devastated, Kootie Pie threw a temper tantrum on the spot.

Super Koopa: Along with Kooky, Hip and Hop, Kootie Pie traveled to Paris once Bowser had successfully captured Mario, Luigi and Princess Toadstool. While she was there, Kootie Pie tried on some bizarre-looking clothes that only Bowser seemed to appreciate.

Super Mario World
Fire Sale: Upset that her new ice palace was freezing cold, Kootie Pie and a Koopa Troopa stole Mama Fireplant from Dome City to heat the place up. However, Mama Fireplant's fireballs caused the place to start melting just as Mario and his friends showed up to rescue Mama Fireplant. Trying to fight back, Kootie Pie froze herself by accidentally stepping on a Porcupine Fish, as did Mario, Luigi and Princess Toadstool. Yoshi eventually overcame his fear of water to save the day, leaving Kootie Pie frozen in her own ice palace.

Send in the Clown: In her last animation appearance, Kootie Pie assisted Big Mouth in setting up posters for Bowser's circus, which was actually a ruse to lure the Cave People to the Neon Castle. Kootie Pie had no lines of dialogue aside from laughter in this episode despite her screen time.

Nintendo Comics System
Wendy was also featured in the Nintendo Comics System. Wendy even had an entire comic dedicated to her called "Fins and Roses", which has her on a misadventure with Stanley the Talking Fish.

Nintendo Adventure Books
In Double Trouble, if Mario chooses to ascend a flight of stairs while being chased by Bowser through his Koopahari Desert Fortress, he will eventually find and enter Wendy's room, where the Koopaling and her GLOM-created clones (which are dispensed by a vent in the floor, and number in the dozens) will swarm him, leading to a Game Over.

In Leaping Lizards, Wendy and five of her brothers enter as a team in the International Mushroom Games, though the only competition it is mentioned she competes in is the Beetlebowl, an all-team game. If the reader chooses Mario, Luigi and Princess Toadstool as their offensive team, Wendy easily captures a Hoopster, nonchalantly steps over Toad (the only defender left, due to Wooster and the Mushroom King wandering off) and scores by slamming it into her opponents' bucket. If Princess Toadstool, Toad, Wooster and the Mushroom King are picked as the offensive line, Wendy teams up with Roy (who creates a fake Hoopster as a distraction) to get past the Mario Bros. and score.

In Koopa Capers, Wendy disappears mysteriously, and Bowser, fearing she may have been kidnapped, forces Luigi into looking for her. During his search, Luigi discovers Wendy was not abducted, but has been in hiding, working on overthrowing her father by organizing minions loyal only to her, and by concocting a potion (which she learned about by reading Bowser's book Reptile Magic and VCR Programming Instructions) that will combine her magic wand with her brothers' wands (which she had stolen) to create a "super wand". By following Luigi, Bowser and the other Koopalings confront Wendy in her hidden chamber, but are willing to put off punishing her if she helps them search for Luigi, who is hiding in the room. If Luigi has Boom Boom's socks (which were meant for Wendy's potion, but were lost by her loyalists) he can toss them into Wendy's simmering pot, and knock the entire Koopa family out (the potion only needed one sock, any more than that and it will emit a gas that instantly puts Koopas into a deep sleep for at least a week).

Super Mario Adventures
Wendy was also prominently featured in the Super Mario Adventures comic by Nintendo Power. This comic portrayed Wendy as the de facto leader of the Koopalings, being the most responsible of them.

Club Nintendo
In the Club Nintendo comic "Super Mario: Erholung? Nein, danke!", Wendy works as a stewardess for the airline KoopAir. She acts very unfriendly, urging Mario and his fellows to enter the plane and, instead of delivering their meal, simply throwing pizza boxes at them. This comic also hints at Wendy's age, as she explains that she has done this job for 40 years, and she is also seen smoking at one point. Wendy appears again at the end of the comic, where she can be seen dancing in a disco.

Mario is Missing!
Though absent from the NES and Super Nintendo versions of Mario is Missing!, Wendy Koopa (as she's called) does appear in the PC version of the game. Aiding her family in their plan to melt Antarctica, Wendy guarded a corridor in Bowser's fortress, and was also directly involved alongside Bowser in capturing Mario.

Wendy was ultimately defeated by Luigi, who was searching for his kidnapped brother.

Yoshi's Safari
In Yoshi's Safari, after Bowser takes over Jewelry Land, Wendy resides in Pipe Island, where she guards a light-blue rectangular gem.

In her battle against Mario and Yoshi, Wendy uses an indestructible shield, hiding inside Warp Pipes while she hurls bombs. A Winged Anvil flies back and forth before turning and shooting horseshoes at Mario. When it does so, it provides Mario with the opportunity to shoot it with his Super Scope, causing it to fall and onto Wendy if she is below it at the time. Being hit by the Anvil three times defeats Wendy.

Hotel Mario
In Hotel Mario, Wendy is the owner and boss of Wendy's Blitz Snarlton Hotel; a hotel with a casino theme. Located in Wendy's Sweet Suite, Wendy would attack Mario by summoning hearts to open doors and attack Mario. She stays on the highest floor the entire battle, rather than using elevators to travel between floors in pursuit of the Mario Bros. This unique strategy may be the reason for why Wendy is one of the three Koopalings who do not try and eat Mario or Luigi when they catch them.

Mario & Luigi: Superstar Saga
After several years of absence from a Mario game, Wendy makes a return appearance in Mario & Luigi: Superstar Saga. While Bowletta invades the Beanbean Kingdom in Bowser's Castle, Wendy acts as a guard in the castle as the sixth Koopaling to be fought. After solving a small puzzle that requires Mario and Luigi to hit Wendy twice in a row with a hammer, Mario and Luigi battle Wendy.

In combat, Wendy attacks Mario and Luigi by spitting fireballs at them (as all the Koopalings) and by flinging her bracelets at them. These bracelets expand and close around either Mario or Luigi. As Lemmy, she disguises Spinys as herself. She has a Time Bob-omb on her side during her battle, which forces Mario and Luigi to defeat her in a set amount of turns.

Defeating Wendy raises a platform, allowing the Mario Brothers to reach Larry.

Mario Kart 8
Wendy O. Koopa, alongside the rest of the Koopalings, appears as a playable character for the first time in Mario Kart 8, where she is an unlockable character. She is voiced by Ashley Flannagan in this game, who gives a more average-pitched voice. Her emblem is a pink silhouette of her head on a black background. Her blurb in the Japanese April 30, 2014 Nintendo Direct reads ｢打倒 プリンセス！」, meaning "Overthrow/beat-down princess", while the English Nintendo of Europe bio calls her a "Speed Queen".

Wendy is a lightweight racer, with her stats being tied with that of Larry.

Wendy is the Normal Staff Ghost for Dolphin Shoals. She doesn't have an advertisement of her own like the other Koopalings (with the exception of Ludwig), but she shares one of the "Women of Racing Organization" banners seen on Royal Raceway with Rosalina and Toadette.

Like most other females, Wendy uses feminine color schemes for her parts. Her main color is pink, which is reflected on most of her vehicle bodies and Super Glider. Since Circuit Special and Sport Bike don't have pink as a color option, Wendy uses instead black varnish and yellow and orange varnish, respectively. Her Standard parts also use light blue as a secondary color.

Super Smash Bros. for Nintendo 3DS/Wii U
Wendy, along with the rest of her siblings, make their Super Smash Bros. debut as unlockable playable characters accessible via "palette swaps" of Bowser Jr. She is treated as a separate character, having her own voice, and the announcer calls her by name, but her attacks are identical to Bowser Jr. The rim and propeller of her Koopa Clown Car are colored pink, her signature color, and has a different face. Her voice is once again being portrayed by Lani Minella. However, her voice clips in-game are being reused from her appearance in New Super Mario Bros. Wii. Due to the fact that, in-game, she, alongside her brothers are referred to as separate fighters from Bowser Jr., it technically means that Wendy O. Koopa is the first playable female villain in the Smash Bros. series.

Super Princess Peach
Wendy was originally going to appear in Super Princess Peach. However, she was taken out of the final game with the rest of the Koopalings for unknown reasons.

Mario & Sonic at the London 2012 Olympic Games
Wendy appears as a Mii costume in Mario and Sonic at the London 2012 Olympic Games, and her costume can be unlocked by playing as a Mii ten times in single event mode. Once the player puts her costume on a Mii, that Mii gains all of Wendy's traits. She is best in the speed and skill category and fairly low in the power category. The rest of the Koopalings all have their own costumes and specific traits as well and their own way to unlock each one.

Physical appearance
Like most of the other Koopalings, Wendy has a yellow and tan skin complexion, but she is unique in that her head is also this colour, unlike Bowser and the other Koopalings, whose heads do not match their body scales. As the only female Koopaling, Wendy has obvious physical differences, but in terms of body she appears to be most similar to Larry; the main difference being her thinning, feminine legs, and her overall slightly taller height. Wendy has a four-ribbed, padded stomach, and her head is a very simple round shape. Her mouth is puffy, round and gives the impression that she is wearing pink lipstick; her cheeks are also very round and baby-faced.

Even though she is the only female Koopaling, Wendy appears to be relatively bald, even though some of her brothers have full hair. The only time she was depicted with hair was in the Nintendo Club comic "Super Mario: Erholung? Nein, danke!", where she was a brown-haired stewardess. She also transformed into a blonde human in The Adventures of Super Mario Bros. 3 episode "The Beauty of Kootie". Additionally, Kootie Pie has a mole on her right cheek that Wendy does not have in any video game appearance. Recent games have revealed that her eyebrows are brown, and like her eyelashes, extend off her face. Her eyes themselves are large and round, and her light blue irises are roughly the same as Larry's.

Rather than wearing the spiked cuffs the male Koopalings have, Wendy has large, golden bracelets on her wrists (implied in New Super Mario Bros. U to be Candy Rings), which bear a resemblance to the rings from the Sonic the Hedgehog series. She usually wears a long, beaded, red necklace and thick, pink pumps, as opposed to the other bare-footed Koopalings. A large pink bow with white polka-dots is also included in her appearance, similar to Birdo's bow (aside from the colouration). Wendy's shell is pink, lined with a white encasing, and the multiple, short spikes are circled with grey rings. Wendy's in-game sprites in both Super Mario Bros. 3 and Super Mario World depict her with a red head and shell colouration, a white bow with red polka-dots, iris-less eyes, and no necklace; additionally, SMW gives her bare feet, depicts her bracelets as red cuffs without spikes, and in several sprites, gives her teeth.

Personality and traits
Wendy is shown to be very desiring of wealth and prestige; her being the one of two Koopalings in Mario & Luigi: Superstar Saga to drop 102 coins instead of 99 may be a reference to her greed. The comics typically portrayed her as a spoiled brat, and she even thought of herself as Bowser's favorite child. She does whatever she can to impress her father and likes to be congratulated for her bad deeds. Her personality in the cartoons highlighted these traits further, and she was shown to have a very short temper over little things and could be violent when provoked. The English in-game text in Super Mario World implied she spent her time in her castle singing. In the PC version of Mario is Missing!, Wendy acts exceedingly girlish, perhaps in a mocking manner. It is stated in her bio on the Japanese New Super Mario Bros. Wii website that she is a "strong-minded, intrusive tomboy". New Super Mario Bros. U implies that she is somewhat giddy, although obviously not to the same extent as Iggy, due to her reaction when encountering Mario. Also, she was shown to be somewhat surly in the Nintendo Club comic "Super Mario: Erholung? Nein, danke!" and was also implied in the same comic to love disco dances. She seems to love water, as she was fought in regions that dealt with water in Super Mario Bros. 3 and New Super Mario Bros. Wii, and both New Super Mario Bros. Wii and New Super Mario Bros. 2 had Wendy utilizing underwater combat when fighting Mario. The Super Mario Bros. 3 manual also implies that Wendy is concise, thoughtful and studious regarding threats she hasn't encountered before, in this case Mario. The Official Nintendo Power guide to Super Mario Advance 4 also claimed that Wendy's tomboyish traits were because of her need to adapt to the fact that she's the only female among the Koopalings. In Volume 42 of Super Mario-Kun, Wendy has an apparent affection for Mario and uses her rings to keep him captive. Super Smash Bros. for Nintendo 3DS / Wii U says that she has a rivalry with Peach and Daisy, which is the only known relationship a Koopaling has to a spin-off character.

In the adventure book story "Koopa Caper", Wendy is depicted as being treacherous, although her actions in the game itself as well as Japanese promotional materials conflict with this, depicting her as being fanatically devoted to Bowser and his cause.

Powers and abilities
Wendy has displayed some unique abilities throughout her appearances as a boss character. In Super Mario Bros. 3 and New Super Mario Bros. Wii, Wendy uses her wand to create up to three glowing rings that float around colliding with each other and the environment. The rings can glide through water as well, although at lower speeds, and over time they dissipate. In Mario & Luigi: Superstar Saga, she didn't have to use her wand to create rings that would close in on the Mario bros. once they appear beneath them. This game also had Wendy breathing fireballs and creating Spinys disguised as clones of herself, an ability shared with Lemmy and reminiscent of how they used similar-looking "dolls" to confuse Mario in Super Mario World. Wendy is shown running and jumping in Super Mario Bros. 3 and New Super Mario Bros. Wii, and the later also showed her spinning inside of her shell for offensive and defensive purposes. New Super Mario Bros. 2 also showed her as being an adept swimmer. New Super Mario Bros. U also depicts her as being skilled at ice-skating. In the same game, she also seems to throw her ring bracelets and have them richochet against walls, hinting that they were Candy Rings. In addition, like Bowser and the other Koopalings, she has superhuman durability, surviving near-death situations, such as being dunked into lava (and later having her castle being collapsed on top of her in Super Mario World, her surviving her being blasted with a fire flower in Mario is Missing, her surviving being crushed by Bowser's castle in New Super Mario Bros. Wii, and her surviving being knocked into a lava pit by a newly-gargantuan Bowser in New Super Mario Bros. 2

Bio from The Adventures of Super Mario Bros. 3 Writers Bible
''She's snobbish, spoiled and deceitful, and those are her good traits. A vain teen queen, Kootie Pie despises the princess and her goody-two-shoes ways. King Koopa gives her everything she asks for. He turns into a totally permissive parent whenever Kootie Pie whines "I want!". Anything anybody else has, Kootie Pie wants. And anything she already has, she wants two of. Kootie Pie is not that bright, but has megawatts of intensity and laser-sharp focus. When she gets hold of an idea, she does not let go.''

Mario Kart 8

 * Weight Class: Light
 * Stats
 * Speed
 * Ground: 2.75
 * Water: 3.25
 * Air: 2.75
 * Anti-Gravity: 3
 * Acceleration: 3
 * Weight: 2.75
 * Handling
 * Ground: 4.25
 * Water: 4.25
 * Air: 4
 * Anti-Gravity: 4.5
 * Traction: 4.25
 * Mini-Turbo: 2.75


 * Bio: "Wendy doesn’t have her magic rings to help her on the course, but she doesn’t need them to be a dominating lightweight racer!"


 * Staff ghost time

Quotes

 * 「アタイはマリオと戦うのは初めてだからこの表でよーくマリオの動きを研究しとくのさ. 」 ("I'm studying his moves very carefully because this is the first time I've met up with Mario.") - The Super Mario Bros. 3 Japanese manual (page 12)
 * "This is the first time I've met up with Mario. I'm studying his moves very carefully." - The Super Mario Bros. 3 English manual (page 13)
 * "Hey Mario! Try some of my candy rings. I think you'll be surprised how they taste! (I hope Mario falls for this trick... He doesn't know that these sweets are deadly - yet!)" - The Super Mario Bros. 3 Nintendo Power Strategy Guide
 * "「ハ~イマリオ<3ウエンディ姫おまちかね<3」 (Ye~s, Mario <3 Princess Wendy has been waiting for you <3 )" - Super Mario-Kun Volume 42, (page 10)
 * "I want it! I WANT IT! I WANT IT!" - Reptiles in the Rose Garden
 * "Gasp, oh! There, daddy! There's the castle of America's president. They call it the White House." - Reptiles in the Rose Garden
 * "How dare you disturb the almost-empress of the entire real world!?" - Reptiles in the Rose Garden
 * "I hate it when people tell me what to do! I HATE IT! I HATE IT!!!" - Reptiles in the Rose Garden
 * "AAUGH!! I'VE BEEN KISSED BY A PLUMBER!" - The Beauty of Kootie
 * "Why does that prissy Princess Toadstool get to go to a Real World concert and not me? Aren't you always telling us that you are the most powerful king there ever was, and I am your favorite only daughter?" - Kootie Pie Rocks
 * "Aliens! Daddykins! Zillions and zillions of them! Twenty feet tall! Armed and dangerous and spewing smoke and fire and coming this way in heavily-armed spaceships! WE'RE DOOMED! And I don't have a single thing to wear!" - Mush-Rumors
 * "Hey, how 'bout a kiss, Luigi-kins? No kiss? Then no brother!" - Mario is Missing!
 * "Big deal, one Portal locked. Return all the artifacts you want, Luigi-pie, WE'LL STEAL MORE!" - Mario is Missing!
 * "Let's hug and make up, Luigi baby. Wendy wants violets, not smelly old fire flowers." - Mario is Missing!
 * "Huh? Ha! Re-hee-hee-hee!" - New Super Mario Bros. series
 * "Nya nya nya nya nya!" - New Super Mario Bros. U
 * "Hello!" - Mario Kart 8
 * "Hi!" - Mario Kart 8 (when performing a stunt)
 * "Yahoo!" - Mario Kart 8 (when performing a stunt)
 * "Watcha!" - Mario Kart 8 (when performing a stunt)
 * "Yessaaah!" - Mario Kart 8 (when airborne)
 * "Yippie! Wow!" - Mario Kart 8 (winning 1st place)
 * "Whoa! Ha ha ha!" - Mario Kart 8 (winning 1st place)
 * "Yeah! Whoa-ho!" - Mario Kart 8 (winning 1st place)
 * "Ha ha! Yeah!" - Mario Kart 8 (getting 2nd - 6th place)
 * "Whyyy?!" - Mario Kart 8 (getting 7th - 12th place)