Gonzo was my second favorite Muppet, right behind Zoot. Zoot was the "Ultra cool" sax player who was really into Jazz. Probably not the info you were lookin for ......
The GREAT Gonzo.
As kids my brother and I had a Muppet Show record. Gonzo's shtick on the record was eating a rubber tyre to the Flight of the Bumblebee. When Kermit tells him the effect is lost because it's on record he says "What? You couldn't hear my ears wiggle?"
Gonzo is when there is recognition of a camera in the room and they interact with it moreso than just pretending no one is watching....if that makes any sense.