Your choice ****ing sucks dude.
Anyway, I am going to be a dick to dadudemon by picking who I suspect will be his favorite before he can (Though he is genuinely mine as well): Guts, from Berserk.
Guts has everything I like in a character. Physically, he is tall, built like a train, with cool armour, and is hawt. As a character, he represents simultaneously the strength of man, but also its darkness. Guts has had a traumatic life, worse than anyone I can claim to know, but his will is so great that he doesn't spend his time whining or moping about it like a *****. He deals with his issues in a very proactive fashion, if not a healthy one. The manga starts off by showing what Guts has become, a brutal, amoral anti-hero, who might be too bloodthirsty and selfish to even qualify as that. He is a character almost wholly without a moral compass, which was a big deal back then, wasn't done too often in manga. Then, we see his backstory. He started off as a fairly nice kid, a child soldier who, after his adoptive mother dies, yearns for his adoptive father's approval. This is where his issues start (**** spoilers though, for those who for some stupid reason still haven't read Berserk). We see Guts grow from a relatively mentally stable kid, to a distant, aloof, angsty teenager with clear issues, to a borderline-sociopathic hunter of monsters with only revenge on his mind, and, when he finally starts to get past that by rediscovering the value of companions, a troubled hero (Sorta) with a dark side that he must constantly fight against.
Part of Berserk's charm is its ability to seamlessly weave the supernatural with the mundane in a believable way, and Guts demonstrates that perfectly, showing exactly how horrible the immaterial can make one's life, but Guts, above all else, even now refuses to break.
Also he's hot.