Mad Madam Mim, maybe.
Dood! I was gunna say Daria. Then I decided Dr. Suess. (I know, complete opposite sides of the spectrum haha)
Wile E. Coyote , No matter how many times he falls He never gives up , But I would avoid buying ACME Products .
betty boop :)
It's cliché but Holden Caufield.
Oh, heck. I don't know if relate to would be right, but my favourite character, is Miss Piggy. For sure.
Will Graham from Hannibal and Daniel Malloy from Queen of the Damned.
Gregory House. He's basically a decent man but not perfect by a long shot, sarcastic as hell, and doesn't suffer fools. Much like Yours Truly. :-)