Ernie, Kermit the Frog, Guy Smiley, Little Chrissy (puppetry), Bip Bipadotta, Thomas Twiddlebug, Sinister Sam, Bad Bart, Little Bird (1969), Granny Fanny Nesselrode (1970; 1972), Spaceship Surprise Captain, The Genie (1973), Barry Rhymie (1978), Captain Vegetable (debut sketch), Charlie (occasionally), Yip Yip Martian, Two-Headed Monster's Mother, Harvey Monster (occasionally), Beautiful Day Monster, Various