Kat & Ana

"We're not just ninjas- we're also the stars of Mystical Ninja Elementary's upcoming school play!"

- Kat and Ana

Kat and Ana are major human characters in the WarioWare series. They are ninja twin sisters who reside at their house, in a park located in Diamond City. Kat and Ana adore nature very much, especially animals and flowers. They attend both the Diamond Kindergarten and the Mystical Ninja Elementary. Their names are a pun on the word "katana", which is the name of a Japanese samurai sword. Kat and Ana debut in WarioWare, Inc.: Mega Microgame$! as two of Wario's friends who help him produce microgames.

WarioWare, Inc.: Mega Microgame$!
Kat and Ana can be seen in the intro of WarioWare, Inc.: Mega Microgame$!, where they're called by Wario to join his company WarioWare, Inc. to produce microgames for his upcoming game. Like Wario's other friends in Diamond City, Kat and Ana agree.

In Kat and Ana's story, a villainous skeleton spirit named Boneheads appears over the Castle in Diamond City at night. He takes possession of the princess/prince who sleeps under the roof. Ana appears along with her crew consisting of five other ninjas. They attack the spirit, but he easily defeats all of them with his two lengthy swords. Only she can still affect something, but she fails as well. Because Ana hasn't a chance against Boneheads, she assigns her animal companion, Don the Sparrow to carry a letter with the message "Ninja girl! Save me!" to her sister Kat to call for help. After he flies off, Boneheads also captures Ana who is captivated with a rope.

Kat resides with Paw the Dog at an unknown place in which seems to be far away from Diamond City. When Don the Sparrow arrives, he drops the letter in front of her. Shortly after, Kat reads the message and heads for Diamond City with her faithful canine companion. On their way, they came across various Japanese landscapes.

When Kat and Paw the Dog arrive, they already face Boneheads at the entrance of the Castle who floats up to the roof again. Kat and Paw the Dog make it through the many floors of the Castle and eventually reach the roof where Boneheads awaits them. Kat battles him, but she couldn't vanquish him with her casual sword, so Paw the Dog joins the fight and morphs into a gargantuan blade. With the help of Paw, Kat can finally defeat Boneheads after some effective slices. He degrades bone by bone. The princess/prince is delivered from Boneheads' influence and Kat rescues Ana by cutting the rope with that she is captivated. At the end of the adventure, Kat, Ana, and their two animal partners along with the princess/prince being gleeful can be seen in front of the Castle.

Kat & Ana's microgames are themed after nature, and thus all of them feature animals or plant life in some way. The song Four Seasons plays throughout their stage.

In an unlockable minigame called Jump Forever, Kat and Ana swing the rope that Wario has to jump. In the unlockable minigame taken from Mario Paint, Fly Swatter, the Bob-omb appearing in the congratulations sequence has been replaced by Kat.

WarioWare, Inc.: Mega Party Game$!
In WarioWare, Inc.: Mega Party Game$!, Kat and Ana perform in a television show called Super Show after 9-Volt's entrance. Under the headline "Karate", they show off their ninja techniques. However, it isn't known what occurs next because Wario's television set bursts.

Kat and Ana are two of the ten selectable characters in the multiplayer games.

WarioWare: Twisted!
In WarioWare: Twisted!, Kat and Ana go on a field trip with their kindergarten class on the Diamond Knoll. Their pets, Shadow the Dog and Shuriken the Falcon come along with Kat and Ana. The teacher instructs the children not to bunk. During the trip, Ana discovers a beautiful flower. While Kat takes a stroll, she and her two animal friends pause at the flower. Ana decides to show the flower to Kat and chases after her. However, Kat damages a beehive with a stick when she arrives. The bees get furious for have being disturbed, so Kat and Ana sprint away from the swarm. They abscond into a wooden cabin and rest there for a moment.

However, Kat and Ana aren't alone. They encounter the Diamond Troll. He immediately prepares his attack, so Kat and Ana quickly change to their ninja uniforms and attack him with their swords. Then, Kat and Ana charge their blades and shoot out a sword beam at the Diamond Troll. Shortly before they can attack, Shadow the Dog and Shuriken the Falcon crash right into the cabin and hit the ceiling. Then, they plummet into the Diamond Troll and all three are knocked out. Kat and Ana are speechless for a moment.

Following these events, Kat and Ana decide to return back home, but after they open the door of the cabin, the swarm of bees reappear. The two ninja sisters and their animal pals escape from the swarm in front of the sunset.

In Wario-Man's story, the alien Orbulon gives Kat, Ana, Mona, 9-Volt, and 18-Volt a flight in his spaceship. All five humans sit on seats behind Orbulon.

WarioWare: Touched!
Ana and Shadow the Dog stay in their house in WarioWare: Touched!. She wants to eat bananas, so she opens the door to the room where the bananas should lie on a dish. However, Ana only finds out that the fruit is missing. Shocked by this, she hectically searches the fruits in every corner of the room. During this, Shadow the Dog notices animal footprints in the house. He informs Ana of the tracks by barking. She now also notices the tracks and sets off to find the banana thief. Before heading out, Ana writes a note for Kat so that she will know where to find her. Ana and Shadow the Dog dash out the door to chase after the culprit. Kat reads the note and catches up to her to retrieve the stolen bananas with Shuriken the Falcon.

Kat and Ana eventually capture the thief, who turns out to be a small simian. They're surprised by this, are appealed by the simian's adorable appearance, and give him the name Numchuck. Kat and Ana cheerfully lift the simian up and down and the thievery is quickly forgotten.

WarioWare: Smooth Moves
In WarioWare: Smooth Moves, the gargantuan, red Elephant Ogre comes to Diamond Dojo and stands in front of it at night. The concerned Sensei in the Dojo faces the monstrous being who suddenly lets out a piercing shriek. Quickly, Kat and Ana come to the Dojo's rescue. Ana gets inside the Dojo to reach the Sensei. When she arrives, she notices the Little Ogre bugging the Sensei and yanking his hair. Outside, Kat battles face to face with the Elephant Ogre. She activates her clone powers and five duplicates appear simultaneously, in which the clones immediately attack the giant with their swords. The Elephant Ogre's club and Kat's sword press each other, but then the Little Ogre shouts to stop the fight.

It turns out that the Elephant Ogre has just been searching for the Little Ogre, probably his child. With the Little Ogre on his hand, the Elephant Ogre peaceably leaves during the sunrise. Kat waves to say goodbye, but she suddenly notices that the actual Little Ogre is still there. The silhouette on the Elephant Ogre's hand is actually Ana. She desperately waves with her arms and cries.

Kat and Ana also work as editors of Wario's one-shot newspaper, "The Weekly Wario". They write about rumors involving the Form Baton.

WarioWare: Snapped!
In WarioWare: Snapped!, Kat and Ana run the newly opened Wario Park along with Wario, Mona, and Jimmy T..

WarioWare: D.I.Y. Showcase
In WarioWare: D.I.Y. Showcase, Kat and Ana have their very own stage called "Kat and Ana's Sky Patrol". In this stage, they jump off a cliff first only to fly above the sky using yellow capes in a fashion similar to Caped Mario and Caped Luigi. They are accompanied by birds (to denote the player's four "chances" for the stage).

Game & Wario
Kat and Ana appear in Game & Wario, where they host the Patchwork minigame.

Kat and Ana also appear as bowling pins in the Bowling minigame.

Super Smash Bros. Brawl
In Super Smash Bros. Brawl, Kat and Ana appear as Stickers and together on a trophy. In addition, they appear as Assist Trophy characters that soar across the stage and slash players with their swords.

Super Smash Bros. for Nintendo 3DS / Wii U
Kat & Ana return as an Assist Trophy in Super Smash Bros. for Nintendo 3DS / Wii U. Their models have been updated to reflect the pair's Game & Wario design.

Rhythm Tengoku: The Best+
Kat & Ana make an appearance in the Rhythmware challenge set of Rhythm Tengoku: The Best+. The ninja twins appear in the set's version of Jumping Road, with the player controlling them as they catch oranges and pineapples bouncing down some steps towards them.

Personality and abilities
Kat and Ana are often depicted of possessing surprising abilities; they've been seen cloning themselves, jumping higher than the average human can, and defeating enemies more than twice their size when working as a team. Many of these powers are classic ninja techniques. Despite this, Kat and Ana are also displayed as quite naïve (or at least Kat). In WarioWare: Twisted!, Kat disturbs a nest of bees without a thinking things through. She is the older of the two. Kat acts bossy which sometimes results in making Ana cry, but she cares deeply for her. Kat is very fond of animals. Ana is quieter and more cautious than her sister. She loves flowers. It's unknown how they became friends with Wario.

Microgames
Kat and Ana come with their own set of microgames in all games of the WarioWare series.

In WarioWare, Inc.: Mega Microgame$!, Kat and Ana created microgames of the Nature genre. All games involve animals or plants. WarioWare, Inc.: Mega Party Game$! also features Kat and Ana's nature microgames, plus a multiplayer game made by them, Wobbly Bobbly, which involves animals as well, namely tortoises.

In WarioWare: Twisted!, Kat and Ana's microgames involve a particular style of gameplay rather than a specific visual theme. In this game, their set of microgames is called Tap Out and requires to press only.

In WarioWare: Touched!, the name of Kat and Ana's set of microgames is Ninja Scribble and involves scribbling and drawing with.

In WarioWare: Smooth Moves, Kat and Ana's set of microgames involves the forms The Remote Control, The Sketch Artist, The Chauffeur, and The Samurai.

Kat and Ana's five microgames in WarioWare: Snapped! require two players to play rather than one. After the end of their stage, photo's of the two players with goofy decorations are shown. In Jimmy T.'s stage, a comic strip of them can be shown. In this comic, they have a fighting practice.

In WarioWare: D.I.Y. Showcase, Kat and Ana return to their original role and host a new set of Nature themed microgames again. Unlike the original WarioWare which featured microgames about animals and flowers, the microgames in this set for the game are limited to only animals.

Profile page from the WarioWare, Inc.: Mega Microgames$! manual
"We're Kat & Ana! Yep, we're cute, we're kindergartners, and we're ninjas! We like plants and animals so much that we included them in our games. Apparently, we're graduates of Wario's school of kindergarten-at least, that's what the graffiti on the wall said! If I remember correctly, the teachers weren't too happy about that..."

Kat

 * Occupation: Kindergartener
 * Special Skill: Throwing Stars
 * Favorite Thing: Animals
 * Bio: Descendent of the Iga ninja clan, Kat is the oldest of twin sisters. She goes to Diamond Kindergarten. Kat is bossy and a bit of a bully, but she loves her pet turtles.

Ana

 * Occupation: Kindergartener
 * Special Skill: Weapon "Makibichi"
 * Favorite Thing: Flowers
 * Bio: Kat's younger sister, Ana, is very quiet. Kat sometimes makes Ana cry, but Kat is always there when Ana is in danger. Ana loves all living things, especially flowers.

Website Bio from WarioWare: Touched!
''They're ninjas, yes, but also kindergartners. So it's no surprise that playtime for this katana-wielding, puppy-loving duo involves lots and lots of scribbling. Just try to stay inside the lines.''

Kat
-Ana's older twin sister -Kindergarten student -Loves animals, especially turtles -Cuts her own bangs

Ana
-Kat's younger twin sister -Kindergarten student -Loves flowers, especially cosmos -Won't let Kat touch her bangs

Trivia

 * The music in Kat and Ana's epilogue in WarioWare, Inc.: Mega Microgame$! is the same as during the level select in the Golden Pyramid in Wario Land 4.
 * Kat and Ana appear in all the WarioWare games due to their appearance as stamps for comics in WarioWare D.I.Y., as well as their return in Game & Wario.