Season 4, Episode 3: "The Pitch The Ticket"

I could be a character.

-You? -Yeah. You base a character on me.

So on the show there's a character named George Costanza?

Yeah. What? There's something wrong with that? I'm a character.

People are always saying to me, "You know, you're quite a character."

And who else is on the show?

Elaine could be a character. Kramer.

Now, he's a character.