ChalkZone - Season 3 - Eps 12: The Doofi
In an attemp to make fun of Rudy and Penny, Reggie Bullnerd draws doofus versions, of them on the Chalkboard. An enraged Mr. Wilter unknowingly erases them into Chalkzone. Rudy and Penny have to go in.
About ChalkZone

Title: ChalkZone
First Air Date: 2002-03-22
Last Air Date: 2008-08-23
Status: Ended
Rating: 7.2/10 (from 41 votes)
Language: EN
Seasons: 4
Total Episodes: 110
Network: Nickelodeon
Genres: Animation, Action & Adventure, Kids, Comedy
Production Companies: Frederator Studios, Nickelodeon Productions, Nickelodeon Animation Studio
Synopsis
When anything is erased from a chalkboard, it’s not really gone – it just enters a realm called the Chalkzone. And fifth grader Rudy Tabootie found a way to go there! With a piece of “White Lightning” chalk, he can enter the Chalkzone any time he likes. In the Chalkzone, Rudy befriends Snap, a bold superhero Rudy drew years ago. But Rudy soon discovers not every doodle is friendly.