Samuel Joel "Zero" Mostel (February 28, 1915 – September 8, 1977) was an American actor, comedian, and singer. He is best known for his portrayal of comic characters including Tevye on stage in Fiddler on the Roof, Pseudolus on stage and on screen in A Funny Thing Happened on the Way to the Forum, and Max Bialystock in the original film version of Mel Brooks' The Producers (1967). Mostel was a student of Don Richardson and he used an acting technique based on muscle memory.
https://en.wikipedia.org/wiki/Zero_Mostel