Ooblar looks just like other Yolkians only his body's purple with a hat on his head. In his debut, his body was silver with an antenna and not a purple hat.
Ooblar's a foil to his brother, King Goobot. Whether he is generally a serious character, Ooblar tends to be a rather comedic character, in particular when he's trying to interrogate Goddard, only for the mechanical canine to trick him into believing that he is going to self-destruct and take Ooblar with him or when he tries to check out Jimmy's communication toaster.
- (to the toast) "Hello! What galaxy are you from? Where is your leader?"
- "Hello, toast. I greatly admire your ship.
- "YOU LOOK MARVELOUS sunny side up sir!"
- "You and your people will be our slaves!"
- Ooblar's also the secondary antagonist of Jimmy Neutron's Nicktoon Blast.
- He was traded for sulfur butter as revealed by King Goobot in The League of Villains.