Ed Boon, co-creator of Mortal Kombat and Creative Director at NetherRealm confirms via twitter that there will be no Sub-Zero in Injustice. He likens the inclusion of Scorpion to that of Freddy Krueger in MK9. He also says that it’s “not safe” to assume that Batgirl, Scorpion, Lobo and General Zod are the only DLC characters to come. Keep waiting till the end to see that Boon is definitely a man of his word.