The title is self explanatory really. What characters did you dismiss when you first encountered them, but over time found yourself enjoying more as time went on?
Andrew Ryan was one for me. At first he was simply the bad guy trying to kill me, but as I explored Rapture I started to understand his perspective (even though I have never approved of his methods). While he is still very much a villain in the game, I like him as a villain.
The Tachikoma in Ghost of the Shell: Stand Alone Complex. Their voices and dialogue wound me up, and even later they still did occasionally, but at the end of both seasons they show themselves to be awesome characters (can't really say why without spoilers).
EDIT:
Reading the responses reminds me of another one, which is Jamie Lannister from a Song of Ice and Fire. At first he just seems like an arrogant incestuous bastard (which he is really, I guess), but then in the later books he shows some redeeming characteristics and while he still the above, you see a more admirable side to him as well.
Andrew Ryan was one for me. At first he was simply the bad guy trying to kill me, but as I explored Rapture I started to understand his perspective (even though I have never approved of his methods). While he is still very much a villain in the game, I like him as a villain.
The Tachikoma in Ghost of the Shell: Stand Alone Complex. Their voices and dialogue wound me up, and even later they still did occasionally, but at the end of both seasons they show themselves to be awesome characters (can't really say why without spoilers).
EDIT:
Reading the responses reminds me of another one, which is Jamie Lannister from a Song of Ice and Fire. At first he just seems like an arrogant incestuous bastard (which he is really, I guess), but then in the later books he shows some redeeming characteristics and while he still the above, you see a more admirable side to him as well.