DoodleBob wreaks havoc (he steals the magic pencil) until SpongeBob erases him (the eraser end of the pencil is capable of erasing anything, not just drawings). SpongeBob then draws DoodleBob, a sketch version of himself. They realize that it's a magic pencil, and wreak havoc on poor Squidward. SpongeBob draws a jellyfish, then it comes alive. SpongeBob and Patrick are playing 'Rock, Paper, Scissors' using bubbles, when the pencil shoots down like a missile and slams on the ground, making a small crater. The rule of the artist at sea number 1: Always bring a spare pencil. DoodleBob is one of the first antagonists who isn't Plankton to appear on the show.At sea, an artist is drawing a sketch, when he accidentally drops his pencil into the sea.

He also appears in SpongeBob SquarePants: Drawn to Life as the main antagonist. DoodleBob corners SpongeBob once more, but when he is about to capture SpongeBob and literally erase him from existence, he gets stuck on a piece of paper and SpongeBob realizes this, then captures him in an empty book. SpongeBob and DoodleBob then struggle with the pencil and cause it to break in half SpongeBob restores himself, and DoodleBob sharpens his piece of the pencil (though SpongeBob accidentally flings his part of the pencil away through a window at Squidward's house). As the DoodleBob corners SpongeBob, he erases a portion of him (as possible payback) and plus mocks him, provoking SpongeBob. During a chase, he erases a portion of Spongebob and his house. The arm infiltrated SpongeBob's house that night and then used the magic pencil to restore himself (and also adds a pair of evil eyebrows) before attacking SpongeBob. However, unknown to both SpongeBob and Patrick, SpongeBob missed one of DoodleBob's arms. SpongeBob and Patrick chased him to where he had taken residence in a crudely drawn version of SpongeBob's Pineapple house, and when they cornered him SpongeBob erased DoodleBob with the magic pencil. SpongeBob intended to use him to play a harmless prank on Squidward, only for DoodleBob to start beating him, swipe the magic pencil, and run away crazily, screaming gibberish.

He first appears in the season 2 episode 'Frakendoodle' as the main antagonist. He was created by a Magical Pencil, which is even why he was given life. But instead of being good like SpongeBob, he is evil and will do anything to stop his arch-enemy SpongeBob SquarePants.

DoodleBob is a crudely drawn version of SpongeBob.

Doodlebob and the magic pencil part 1