Hydro

Hydro was a warrior from Earthrealm who was a member of the Lin Kuei clan. He appears in the Mortal Kombat: Blood & Thunder comic books, and Mortal Kombat: Legacy.

Overview
Hydro was a close friend of Sub-Zero and a fellow Lin Kuei. He journeyed with Sub-Zero to combat the forces of Outworld. Hydro has the ability to control water and even blasted strong waves of water that were so freezing cold that they could actually freeze the opponent upon contact.

After Scorpion and Hydro fought in Outworld, Hydro was killed, as part of the undead wraith's promise of killing all of Sub-Zero's friends and family before killing Sub-Zero himself.

In Mortal Kombat: Legacy, Hydro is portrayed as a training program used to demonstrate Cyrax and Sektor's abilities. This version of Hydro displays the skills similar to other Lin Kuei cyborgs, such as conducting electricity. Ultimately, Hydro was bested by both cyborgs, allowing Cyrax to perform a Fatality.

Trivia

 * In Mortal Kombat: Legacy, Hydro appears as a non-canon cyborg, which may have been a reference to his fanon appearance in the MUGEN spinoff, Mortal Kombat Project.

Source

 * Mortal Kombat: Blood & Thunder #1 & #3

http://www.comicvine.com/hydro/29-54180/