Tarrant Hightopp, better known as the Mad Hatter, from Alice in Wonderland (2010). I identify with him because we are both mentally ill. We also have similar personalities - we are both generally cheerful but prone to sadness and having meltdowns.
And for some reason I can't explain, I find the Mad Hatter to be very, very cute. His unusual character design really suits him; his gap teeth and thick eyebrows are a part of what adds to his charm and I wouldn't change them (though I admit that I did do a double-take the first time I saw a picture of him). And I just love his high-pitched English accent and laughter.
To be totally honest, I think that deep down I have always had a crush on (fancied) the Hatter, but I hate to admit it because I think it's embarrassing.