Harvey Atkin

Elliot Harvey Atkin (18 December 1942 – 18 July 2017) was a Canadian actor. He was best known for his roles as Morty Melnick in Meatballs, Sam in The Adventures of Sam & Max: Freelance Police, Sergeant Ronald Coleman in Cagney & Lacey, and for voicing King Koopa in the three Mario cartoon franchises; The Super Mario Bros. Super Show!, The Adventures of Super Mario Bros. 3 and Super Mario World.

Description above from the Wikipedia article Harvey Atkin, licensed under CC-BY-SA, full list of contributors on Wikipedia.