CBG has had a major part in the following episodes

• "Three Men and a Comic Book" [7F21]: Sells Radioactive Man #1 to Bart, Martin and Milhouse.
• "Lady Bouvier's Lover" [1F21]: Bart tries to sell him an animation cel of Scratchy's arm.
• "'Round Springfield" [2F32]: Sells Bleeding gums Murphy's album to Bart.
• "Radioactive Man" [2F17]: Tells Bart and Milhouse about the proposed Radioactive Man Film.
• "Bart Sells His Soul" [3F02]: Dealer in souls.
• "Marge Be Not Proud" [3F07]: Gives Bart a lesson in sarcasm.
• "Lisa the Iconoclast" [3F13]: Copying his screenplay.
• "The Day the Violence Died" [3F16]: Screening 'Itchy and Scratchy meet Fritz the Cat' on the 75th Anniversary of Itchy and Scratchy.
• "22 Short Films About Springfield" [3F18]: Sells Hamburglar comic to Milhouse.
• "The Homer They Fall" [4F03]: Returning the Ultimate Belt.
• "The Itchy & Scratchy & Poochie Show" [4F12]: At the Itchy & Scratchy & Poochie signing.
• "The Itchy & Scratchy & Poochie Show" [4F12]: Giving his opinion of Itchy & Scratchy & Poochie to Bart.
• "Homer vs. The Eighteenth Amendment" [4F15]: Accosted by Rex Banner.
• "The Canine Mutiny" [4F16]: Refuses to honour Bart's fony credit card.
• "Treehouse of Horror VIII" [5F02]: Vapourised by a nuclear missile.
• "Das Bus" [5F11]: Downloading pornography from the internet.
• "When You Dish Upon a Star" [5F19]: Outside Kim Basinger and Alec Baldwin's summer retreat.
• "Mayored to the Mob" [AABF05]: At the Bi-Mon-Sci-Fi-Con.
• "Viva Ned Flanders" [AABF06]: Getting his car washed.
• "Sunday, Cruddy Sunday" [AABF08]: Part of the Superbowl bus excursion party.
• "They Saved Lisa's Brain" [AABF18]: Member of Mensa.
• "Brother's Little Helper" [AABF22]: Witnesses Bart's rampage.
• "Treehouse of Horror X" [BABF01]: As "The Collector"!
• "Days of Wine and D'oh'ses" [BABF14]: Throws out his "She-Hulk vs. Leon Spinks" comics.
• "Behind the Laughter" [BABF19]: Gets interviewed by "Behind the Laughter".
• "The Computer Wore Menace Shoes" [CABF02]: Visits Homer's homepage and then enquires about his new internet service.
• "Homer vs. Dignity" [CABF04]: Becomes a victim of Mr. Burns' pranks.
• "Worst Episode Ever" [CABF08]: He has a major part in this episode.