I think it's funny how the article uses like the ugliest Killer Frost picture available. I like the one in my avatar better
Anyway, I hope Jennifer Hale does Killer Frost's voice again since she did Frost's voice in Justice League/Justice League Unlimited. In fact I think she did Frost's voice in every animated appearance she had (outside of Young Justice). It would be awesome if she reprises her role again. The only problem I see with that is that Jenny Hale is already doing the voice of Hawkgirl in Injustice, so it might be weird for her to voice two characters in the same game. However, Tara Strong is voicing both Harley and Raven, so it's not like it would be unprecedented. If they don't get her, who else could they get?
I also want to say that I hope Frost gets a short-haired alt costume inspired by her animated appearance. The achievement pic makes it look like she will have long hair in her primary outfit which is cool, but I'm hoping her secondary outfit in the game has shorter hair, more like her appearances in JLU and Young Justice. If not, I guess there is always DLC.
But yeah, I'm pretty happy she made it in the game. Sorry Captain Cold fans. And I'm not saying that sarcastically. I genuinely think it sucks that Cold gets so little love outside the comics. Counting Injustice, Killer Frost now has at least 4 video game appearances under her belt, while Cold has maybe 1. She also got much more airtime than him in the DCAU. I think Cold deserves much more respect/attention than he gets and I think he would have made a fine addition to this game. I'm still curious why they redesigned so much him in the Injustice comic if he wasn't gonna be in this game. Maybe he will make a non-playable appearance in the mission mode or even story mode. It's not much, but it's better than nothing.