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 .
Mad Madam Mim, maybe.
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.
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. :-)