Shang Tsung, Sub Zero, Scorpion, Liu Kang, Raiden, Johnny Cage, and Shujinko. They be the bomb. Yes I know this is Space Junk. I don't want to put it in Other Games because I'm a little sugar high off lemonade and soda. Talking legitimately sucks.
No, no, no. Kabal, Baraka, Sector, and... hm forgot the others. They are the bomb. It makes me sad that I don't have anyone to play it with.
Fenix, he no longer shoots nets :< Instead he has a weird meat grinder coming out of his belly. It's the thing with MK:A that I don't like - either make it a funny fighting game or a serious creepy one... but anything in the middle (where MK:A is) is just nonsense. Some of the tricks would be really funny if it weren't for the grim setting and fountains of blood, and vice versa some of the abilities are just flat out brutal. The two should never go hand in hand imo.
Apparently Alternate Costumes are unlockables. http://www.gamespot.com/ps2/action/mortalkombatarmageddon/hints.html Halfway down
I know I've got a few, still haven't gotten them all though because I've yet to beat Konquest, but I just don't know how to get them. My friend was using the alternate for Rain once, and he said he didn't know what button he pressed.