Rain

One of my personal favorites in the Mortal Kombat universe is Rain. Rain has water powers to which he uses quite effectively to his strength and ability. He made his first appearance in the Nintendo DS game, Ultimate Mortal Kombat but was not a playable character until Mortal Kombat: Trilogy. He resides in Outworld meaning he is allied with Shao Kahn. Rain is only a DLC character in Mortal Kombat 9 meaning he is not a part of the main story of number 9.

His Fatality moves in Mortal Kombat 9 are: 

Bubble Burst: Back, Forward, Down, Back, Block

Does it sting: Up, Down, Back, Forward, Triangle/Y