In which TV show did Robin Williams make his debut TV appearance?

The question did not state Rowan and Martin revival. Happy Days, I believe, is the correct answer.

Rowen and Martin was a show to be remembered.

Mario Suedi, seeing that I am a late baby boomer? it is my recollection that the more character appeared on an episode of happy days and then got a show. of course I could be mistaken.

I loved that man