Name	Known for
Ivy Austin Orange Bookworm Orange Bookworm See fewer	Grease 2 (1982)
Alison Bartlett Gina Gina See fewer	The History of Sound (2025)
Fran Brill Prairie Dawn Prairie Dawn See fewer	Sesame Street (1969)
Emilio Delgado Luis Luis See fewer	Sesame Street (1969)
Jim Henson Kermit the Frog / Ernie / Bad Bart / Thomas Twiddlebug Kermit the Frog / Ernie / Bad Bart / Thomas Twiddlebug See fewer	The Muppet Show (1976)
Richard Hunt Timmy Twiddlebug Timmy Twiddlebug See fewer	The Muppet Show (1976)
Joey Mazzarino Merry Monster Merry Monster See fewer	Sesame Street (1969)
Anne Meara Self Self See fewer	Heavyweights (1995)
Jerry Nelson The Amazing Mumford / Tina Twiddlebug / Count von Count The Amazing Mumford / Tina Twiddlebug / Count von Count See fewer	The Muppet Show (1976)
Frank Oz Bert / Grover / Tessie Twiddlebug / Cookie Monster Bert / Grover / Tessie Twiddlebug / Cookie Monster See fewer	The Muppet Show (1976)
Martin P. Robinson Telly Monster Telly Monster See fewer	Sesame Street (1969)
David Rudman Chicago the Lion / Bunny Chicago the Lion / Bunny See fewer	The Muppets (2011)
David Langston Smyrl Mr. Handford Mr. Handford See fewer	ER (1994)
Marilyn Sokol Marshal Earp Marshal Earp See fewer	Crocodile Dundee II (1988)
Caroll Spinney Big Bird Big Bird See fewer	Sesame Street (1969)
Randy Van Horne The Typewriter (voice) The Typewriter (voice) See fewer	Blaze Glory (1969)
Robin Williams Self Self See fewer	Mrs. Doubtfire (1993)