
Batman is a man who dresses up like a bat.
The Big Bang Theory Season 9, Episode 21

I've decided I'm going to have Mr. Lee
sign my copy of this month's Batman.
The Big Bang Theory Season 3, Episode 16

The Joker. From Batman.
The Big Bang Theory Season 3, Episode 14

That's how I feel about
Ben Affleck as Batman.
The Big Bang Theory Season 12, Episode 15

Where's Batman?
The Big Bang Theory Season 10, Episode 7