Basically a heavely modified Lui Kang.
Used a dremel tool and then some Apoxey.

From Wikipedia:
In Mortal Kombat: Deadly Alliance, the sorcerers Shang Tsung and Quan Chi join forces to kill Liu Kang, who is unplayable in the game. By Mortal Kombat: Deception, a now corrupted Raiden reanimates Liu Kang's body and sends it on a rampage, causing his soul to attempt to control it. The undead Liu Kang appears as an character that can only be unlocked through the Konquest Mode. From there, Liu Kang enlists with the ninja Ermac to try and save his friends from Onaga. In Mortal Kombat: Armageddon, he accomplishes this task but he is still unable to fully control his body