Watch the gamer's day deception vid with Ed Boon on the narrative. When it goes from the Sub Zero/Baraka fight, it goes into four squares. The top right is the one to watch. It shows young Shujinko talking to Fujin, then Raiden, then this mysterious character in greenish/blue. He or she looks like a cross between Aliens and a praying mantis. It shows Shujinko talking to it, and then ready to fight it in Konquest mode. Notice its flipper for a hand. Could this be the sub-boss??