Hey, everybody.
I'm Professor Proton.
The Big Bang Theory Season 11, Episode 15
No, Professor Proton
came to me in my dream
The Big Bang Theory Season 12, Episode 5
Professor Proton is coming to our house.
The Big Bang Theory Season 6, Episode 22
that people would still
call me Professor Proton
The Big Bang Theory Season 7, Episode 7
that being on
the Professor Proton show
The Big Bang Theory Season 11, Episode 15