Wart

Wart is a frog like character who's first appearance was in Super Mario Bros. 2 where he was the main Villain of the game. He was trying to take over the land of Subcon in Mario's dream and then the next day Mario, Luigi, Princess Peach & Toad are walking they find a cave and on the other side of it is Subcon and Wart has taken over there so Mario & Friends go off to save Subcon & defeat Wart

Warty Xtreme
Wart will appear as a boss in New Super Mario Bros. Xtreme.