Bibbo is an overweight Killer Klown who has a yellow Mohawk and wears a yellow-red checkered suit. He is one of the 2 Klowns to speak English in the film; he said "pizza" and "uh-huh" when showing a pizza box to a teenage girl before Shorty popped out and killed her. His mouth actually didn't move when he spoke. His outfit resembles the Klowns' space shuttle circus tent design.
He was first seen diving onto Mike and Debbie’s car’s windshield with Debbie screaming at his presence, but he fell off. Bibbo was then seen carrying a pizza box (with Shorty coming out to kill a teenage girl in cotton candy). Bibbo was then seen at Debbie’s house watching Slim put Debbie inside a giant balloon. Bibbo was inside the Klown Kar (the second to come out) with Slim, Chubby, Rudy and Shorty. They were annoyed by a security guard who didn’t let them enter the Big Top, so they took out corrosive pies and killed him by throwing them at him. Bibbo and Spikey were the first to find Mike, Debbie and Hansen in their headquarters. They rushed after them but were barricaded from them by two doors. Bibbo had joined the Klowns in trying to get Mike, Debbie and Hansen off a stack of giant blocks until the Terenzi Brothers crashed through the wall with their ice cream truck, freezing them motionless with orders to halt from the plastic Jojo head on top of the van. Bibbo was then seen looking very surprised, as if he were gasping to find that his real leader, Klownzilla, was coming in, and left with all the other Klowns. He died when Klownzilla exploded inside the Big Top, with all the other Killer Klowns.