I just don't want to be
Professor Proton anymore.
The Big Bang Theory Season 6, Episode 22
- Who's Professor Proton?
- He was the host of this great... Hey.
The Big Bang Theory Season 6, Episode 22
Professor Proton is dead?
The Big Bang Theory Season 7, Episode 22
Professor Proton is coming to our house.
The Big Bang Theory Season 6, Episode 22
They cast the new
Professor Proton.
The Big Bang Theory Season 11, Episode 15