Popple is one of the main characters in Mario & Luigi: Superstar Saga and a minor character in Mario & Luigi: Dream Team. Popple, or the "Shadow Thief" as he calls himself, desires to be a super thief who dreams of getting rich quick.
 Mario & Luigi: Superstar Saga
The Mario Bros. first run into Popple and his accomplice, Rookie (who is really an amnesiac Bowser) in the Chateau de Chucklehuck where they are after the secret of the brewery's world famous drink, Chuckola Cola. Engaging the bros. in battle, Mario and Luigi manage to beat Popple and the blank-minded Bowser. The two show up again when Mario and Luigi solve the puzzles of Chucklehuck Woods, but they end up being blasted into the sky by the Chuckolator. He has a tendency of saying "see?" at the end of most sentences.
The Bros. encounter Rookie and Popple again in the basement of Woohoo Hooniversity, where they are trying to steal the Beanstar. The two groups end up fighting again, and even when using their own Bros. move, Popple and Rookie still lose. Suddenly, after the battle, the head of a Princess Peach robot falls through the ceiling and its voice irritates the Beanstar so much it bursts through the ceiling, taking Mario, Luigi, Rookie and Popple with it. The Beanstar then divides into four pieces flinging all its passengers off. Mario lands with Luigi in Oho Oasis, while Bowser is flung to Stardust Fields, where he is soon used as a revival power for Cackletta's spirit. Popple's landing destination is unknown.
Popple appears again in Chucklehuck Woods trying to get a piece of the Beanstar off a statue. The Mario Bros. fight him again, but this time without Bowser. After losing, he swears revenge upon the two and spins himself into the dirt below to escape. Popple appears again later, having made a base in Teehee Valley. After finding an unconscious Luigi in the desert, he takes him as a prisoner to lure Mario to his base. After Mario frees Luigi, Popple attacks and introduces his new Rookie, Birdo, who has fallen hopelessly in love with him. After losing in battle, Popple blames his defeat on Birdo, calls her useless and Birdo, heart-broken, knocks him through the wall. Popple is then sentenced to community service in Little Fungitown where he is last seen, and ironically, his supervisor calls him Rookie.
 Mario & Luigi: Dream Team
Popple reappears in Mario & Luigi: Dream Team. In this game, Popple is first met outside of Pi'illoper's house, running into the Bros. and dropping his loot, he is later seen on two tours, at Driftwood Shore and Mount Pajamaja. He later attempts to steal from Pi'llo-per's collection room again. He mistakes a Wiggler in the P'illo ruins named Wiggly for a security guard and meets Mario and Luigi, whom he still doesn't remember. Popple first refers to the bros. as "ugly mugs", referencing the brothers' first meeting with him in Mario & Luigi: Superstar Saga.
Later, he starts calling them his "rookies" just like how he did to Bowser in the same game. He then tricks Mario and Luigi into fighting Wiggly by talking first, and after insulting the Wiggler, fighting him. After the Bros. beat Wiggly, Popple betrays them, but is beaten. Afterwards, he learns Wiggly wasn't a security guard and insults him some more. Wiggly then chases Popple and he claims he has had enough of this island.
 Battle Patterns
 Mario & Luigi: Superstar Saga
In the first battle against the wannabe thief, Popple is accompanied by his loyal servant, Rookie. Whenever Popple is attacked, Rookie spams each brother with a hammer, which goes faster than normal. If the player defeats Rookie first, it will cause Popple run away from the battle. However, defeating Popple causes the player to get 50 more experience points and 30 more coins. Popple is either do a simple ram into the opponent or steal their Mushroom and either heals himself or Rookie the next turn. This is can be determined by seeing if he grins or not; if he does it's to Luigi, if not it's to Mario. Determining his actual move depends on how the players defend themselves. If they can defend themselves by jumping, he is trying to ram one of the brothers, if they can defend themselves by using hammers, he is trying to steal a mushroom.
The second time the Mario Bros. fight him, he does the same moves until Rookie gets hurt about halfway. Then they start doing "Bros. Attacks" of their own, which always have Popple getting hurt. The first one has Rookie tossing Popple in the air, then he jumps and grabs Popple, then piledrives him into the ground to create shockwaves that the brothers both need to jump over. The second one has Rookie light Popple on fire, then he swings him towards a brother who has to counter with the hammer.
The third time Popple is alone, he has two new attacks. One is where he grabs a money bag and starts throwing random detritus. Most of the time the junk are coins and a mushroom. Occasionally, however, he will throw out a Poison Mushroom and a monster similar to a Designbomb. These items will either come straight at the brothers or bounce towards them, so they will only get hit by them if they jump. The second new move is a little more dangerous. He turns around then he has either the grin on his face or his normal mad expression, then he tries to steal the brother's hammer. This can be countered with the hammer, but if not blocked correctly, Popple steals the hammer and uses it against them. Also, that brother can't attack with the hammer either except for Fire Bros. and Thunder Bros. when advanced. The hammer later returns to their possession after a few turns. Barring this particular fight as he is alone this time, Popple, like Jojora, is not required to be defeated to win any of the battles he is in.
In the fourth and final battle, he fights with Birdo by his side with all of the moves that he previously used. Strangely enough, during this battle, when Popple steals Mario or Luigi's Ultra Hammer, it shows he has a Super Hammer instead.
 Mario & Luigi: Dream Team
In Mario & Luigi: Dream Team, Popple teams up with the Bros. to battle Wiggly but his acts put the Bros. in constant danger, some of them including angering Wiggly, latching on to a Bro. and making it harder for them to counter or selfishly knocking them aside to try and escape. Usually, most of these acts can be prevented if a Bro. attacks Popple when he stands in front of Wiggly to attack, but in some cases Popple shrugs off the blows. After Wiggly is felled, Popple will then turn on the Bros. and fight them himself.
He can attack by running up to either Mario or Luigi and attempting to steal one of their hammers, which can be prevented if the approached Bro. promptly smacks Popple with their hammer. If Popple is successful, he will start hitting them with it afterwards, similar to an attack he did in Mario & Luigi: Superstar Saga. Starting with the Bro. he got the hammer from, Popple will continuously smash Mario and Luigi unless the Bro. with a hammer strikes back with his first when approached.
Popple may also go off-screen and return with his brown sack, from which he throws out three or five objects before him in a row. The objects can be soccer balls, Mushrooms, Coins, or Brick Blocks. Popple will stand before each item (starting from the southernmost one), rear back his foot, and kick whatever it is at the Bros. If he faces up, he is aiming for Mario, and facing straight ahead means that he is aiming for Luigi.
Getting hit by the soccer balls will result in the targeted Bro. taking damage, and must be smashed back before that happens with the hammer to counter-attack. Getting hit by the coins will produce no negative effects, and smashing them back will result in Popple getting them back, also having no negative effects. Getting hit by a Mushroom will heal the hit Bro. by 30 HP, and smashing it back will heal Popple by 30 HP instead. Should Popple kick a Brick Block, he will shatter it open and hurt his toe, revealing one of the other three items mentioned inside. Popple will soon recover from his moment of pain and then quickly kick the item at his target.
 Stat Information
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