Thank you for mentioning MahNah MahNah. He was the first Muppet I saw, and predates Sesame Street itself.
Didn’t that originally come from the Jimmy Dean show?
Or some other variety show?
Even earlier muppets. This one is a vicious bastard.
Wilkins Coffee
https://www.youtube.com/watch?v=LmhIizQQol0
Thanks. Now I got that stuck in my head. My favorite muppet is Grover. Last name is similar and all 3 of my kids were called that at school. Middle daughter collected Grover stuff and has over a hundred items.