Vid-szhite said: Mei is cute, and very annoying to play against. My favorite to play is probably Pharah, since she feels like a better-armed TF2 Soldier.
There's some cool-looking dudes in this game, but you wouldn't know it by looking at the fanart that gets uploaded here, ha-hah.
The masked dudes make for great faceless_males, as art depicting Soldier: 76 and Reaper, or any of the males for that matter, almost always show them giving it hard to the females. It would be a nice change of pace to see a few provocative art of the unmasked males, such as Hanzo and Lucio.
Really all the characters are great in this game, though I don't like Winston and Zarya that much, which is a matter of taste rather than quality.