A large image of a side view of a fist, with "googly eyes" and lipstick, who told bad knock-knock jokes, and laughed almost identically to the Fish. He had a bit
Knucklehead in Season 1
part in the HBO special, The Pee-wee Herman Show, but as a sock puppet who acted and sounded differently
Voiced and puppeteered by Greg Harrison in season 1 and Kevin Carlson in season 2