Gabbo and Arthur Crandall Were short-lived, though enormously successful, kids entertainers in Springfield.
Role in The Simpsons
A colorful, vivacious (even by the standards of Springfield) puppet, he was offset by his more rigid and refined puppeteer, Arthur Crandall. They were so successful, in fact, that they overtook the popularity of Krusty the Clown for a brief time, forcing their competitor into cancellation before making a rather large gaffe, unaware he was still on air.
In an effort to bail out his idol, Bart Simpson snuck into the studio where Gabbo's show was being filmed. During a commercial break, where Gabbo took the time to badmouth his fanbase, the children of Springfield, depsite Arthur Crandall's urgings for him to relent, Bart switched the camera back on, revealing Gabbo uttering the words, "All the children in Springfield are S.O.B.s."
Following Gabbo's gaffe, Krusty (with the aid of Bart and Lisa Simpson) launched a spectacular comeback special, reestablishing the clown's stranglehold on the hearts of the children of Springfield. Neither Gabbo nor Arthur Crandall were heard from again.
In "Bart to the Future", Arthur Crandall and Gabbo are seen once again, as part of an act for the Native American Casino. Gabbo, when not in use, is simply a dummy. This can imply that his remarks about the children being "S.O.B's" are Arthur Crandall's own, and that Crandall has dissociative identity disorder, expressing one personality through Gabbo.