Popple
Popple is one of the main characters in Mario & Luigi: Superstar Saga. Popple or the "Shadow Thief" as he calls himself is wannabe super thief who dreams of getting rich quick.
The Mario Bros. first ran into Popple and his acomplice Rookie (who was really an amnesiac Bowser) in the Chucklehuck Brewery where they were after the secret of the brewery's world famous drink. Engaging the bros. in battle Mario and Luigi managed to beat Popple and the brainwashed Bowser. The two showed up again when Mario and Luigi solved the puzzles of Chucklehuck Woods, they ended up being blasted into the sky by the Chuckolator.
The bros. encountered Rookie and Popple again in the basement of Woohoo Hooniversity where they were trying to steal the Beanstar. The two groups ended up fighting again and even when using their own bros. move Popple and Rookie still lost. Suddenly after the battle the head of a Peach robot fell through the ceiling and it's voice iritated the Beanstar so much it burst through the ceiling, taking Mario, Luigi, Rookie and Popple with it. The Beanstar then divided into several pieces flinging all it's passengers off.
Popple appeared again in Chucklehuck Woods trying to get a piece of the Beanstar off a statue. The Mario Bros. fought him again, but this time without Bowser, Popple was a piece of cake.
Popple again appeared again having made a base in Teehee Valley. After finding an unconcious Luigi in the dessert he took him as a prisoner to lure Mario to his base. After Mario freed Luigi Popple attacked and introduced his new Rookie, Birdo who had fallen hopelessly in love with him. After losing in battle Popple blamed his defeat on Birdo and called her useless, Birdo, heart-broken knocked him through the wall. When last seen Popple was supposedly arrested and sentenced to community service in Little Fungitown where, ironically his supervisor calls him Rookie.
In Paper Mario: The Thousand Year Door, a reference to Popple is made when Bowser visits Poshley Sanctum. When Pennington asks him who he is, one of the answers is "The Shadow Thief". If you select this, Bowser will say "I'll be takin' that, see?", an obvious reference to Popple.
