I would say Sub Zero, but I think I pretty much already have mastered him, but that character has been farmed out, and I am still salty his good stuff got removed but some of the more broken characters got to keep their's. seriously WTF? Was a really good character, and NRS fucked him over with the the indirect nerf's. Giving armor out like candy didnt help either, and was for the most part unnecessary. That said.
Sonya
I need me a rush down, and I hate cage and jax.
CSZ
Might as well pick up a robot and don't want to get on the Sektor bandwagon.
Kabal
haven't really touched him yet but want to see why everyone says he is so hard to play. As I play Kazuya in Tekken I doubt it will be an issue, this game has execution?
Kitiana
Always liked her, my kit is trash atm though.
honorable mention to scorpion.