We don't have a biography for Prof. Sumner Sloan yet. Hang in there, or go ahead and contribute one.
Appearances
Cheers
Guest cast, played by Michael McGuire
- Episode 1x01: Give Me a Ring Sometime (Sep 30, 1982)
- Episode 2x05: Sumner's Return (Nov 3, 1983)
- Episode 5x26: I Do, Adieu (May 7, 1987)