Ooohhh wow... now that is a hard question *thinks really carefully for an extended period of time*............

Character...

*makes a weird sound whilst thinking... still*

Ok... I've come to the conclusion...that my favourite movie character (also being based on my favourite literature characters) include these three:
(I know you asked for one... but its just toooo hard.)

Heathcliff as played by Tom Hardy (Wuthering Heights, 2009)
Mr Darcy as played by Matthew McFayden (Pride and Prejudice, 2005)
Andrew Paxton as played by Ryan Reynolds (The Proposal, 2009)

Ok so... the first two are my main ones, my third one I included because it is not based on a novel (that I'm aware of), and because I just LOVE LOVE LOVE Ryan Reynolds. So um yes....