Injustice: Gods Among Us is almost complete and nearly done build was shown to all at the Twitch.TV booth at PAX East this year. Only about six characters are still locked in the roster, and it appears that one of them might have accidentally been leaked.

When streaming the game from the official Twitch booth, gamers were given a look at the brand new S.T.A.R. Labs trials mode. The mode gives every character ten unique challenges each with specific requirements to clear and twists to the normal rules of an Injustice match. Each trial is stamped with its own character symbol, and one character symbol shown didn’t seem to match up with any other character on the roster. The snowflake design made several fans speculate that Killer Frost would be a playable character in the game.

As the stream went on, yet more evidence pointing toward Killer Frost’s inclusion was found. For example, one mission actually asks you to “defeat Killer Frost.” Another screencap, courtesy of Eventhubs, shows off what appeared to be Killer Frost in action.

Netherrealms has not yet officially confirmed Killer Frost yet, and they are known for including unplayable characters in their game (like Goro in Mortal Kombat 9). So it is not yet certain that she will be an actual member of the roster in the game. However, if she isn’t, Netherrealm is passing up an awesome opportunity. After all, someone has to have Sub-Zero’s freeze ability in this game, right?