Lieutenant Sanchez is an U.S. Special Forces officer mentioned and heard via a transmission message but never seen (other than his charred remains) in Mortal Kombat: Special Forces.
History
Lieutenant Sanchez along with a SWAT team was the one who sent the transmitted message to Major Jackson Briggs and Gemini, informing Jax that they had arrived at the location of the escaped criminals from the Special Forces maxinum security prison. He and the others were there awaiting Jax's orders, but were suddenly ambushed by the Black Dragon clan; it was a trap set up by their leader, Kano.
Lieutenant Sanchez's body was last seen, charred and burnt, along with the other slaughtered SWAT team members at an abandoned warehouse secretly controlled by the Black Dragon.