One of Michael McKean's known roles is Leonard 'Lenny' Kosnowski from the Happy Days episode "Fonzie's Funeral: Part 2" and the show's spinoff Laverne & Shirley. He's also known as Chuck McGill in Better Call Saul.
McKean is no stranger to the Superman franchise and DC Comics.
- He appeared in first season of Lois & Clark: The New Adventures of Superman in episode 18 ("Vatman") as the scientist responsible for the creation of Bizarro.
- Michael also voiced 1950's version of The Joker in an episode of The New Batman Adventures entitled "Legends of the Dark Knight" and Dr. Bartholomew Wolper in the two part adaptation of Batman: The Dark Knight Returns.
- Short Circuit 2 - Fred Ritter
- The Brady Bunch Movie - Mr. Larry Dittmeyer
- Friends - Mr. Rastatter in "The One With the List"
- Star Trek Voyager - The Clown in "The Thaw"
- The series as a whole includes Robert Picardo who played Edward Teague.
- Jack - Paulie
- That Darn Cat (1997) - Peter Randall
- Jungle Cubs - Cecil
- Harvey Birdman Attorney at Law - Evelyn Spyro Throckmorton
- Michael McKean on Wikipedia