We haven't had
a good INVISIBLE man in a while.
The Big Bang Theory Season 8, Episode 23
I think the word you're
looking for is... "INVISIBLE."
The Big Bang Theory Season 5, Episode 17
He's just friends with
an INVISIBLE trumpet player?
The Big Bang Theory Season 11, Episode 17
that the Invisible Girl
is standing there with us.
The Big Bang Theory Season 7, Episode 14
Invisible, unwanted and unloved...
The Big Bang Theory Season 4, Episode 22