|Planet of origin
|See "Family" section
|"The Route of All Evil" (3ACV12)
Brett Blob is the son of Horrible Gelatinous Blob. He goes to Wozniak Nerd Academy with Cubert Farnsworth and Dwight Conrad and acts as the school bully. He and his family live on the rings of an unidentified planet. The Venus de Venus shows a female blob making it possible that Brett Blob and his family are Venusians living on the rings of another planet.
- The voice of Brett is almost identical to the voice of Dolph Starbeam on The Simpsons, another bully who is voiced by Tress MacNeille.
Brett Blob: Pretty scrawny black hole. It must be hungry.
Brett Blob: I thought I heard the doorbell but I see it was the dorkbell!