
He's just friends with
an INVISIBLE trumpet player?
The Big Bang Theory Season 11, Episode 17

Sheldon, I've spent
most of my life feeling INVISIBLE,
The Big Bang Theory Season 9, Episode 17

I think the word you're
looking for is... "INVISIBLE."
The Big Bang Theory Season 5, Episode 17

INVISIBLE to everyone.
Westworld Season 2, Episode 8

that the Invisible Girl
is standing there with us.
The Big Bang Theory Season 7, Episode 14