I've already done a fan fiction story oddly similar to this. Here is a copy and paste (It's long, and drags on. I plan to revise it if I feel like it):
Frost?
I should have known better, Sub-Zero said with a heavy heart. The last time the conniving Frost tried to steal his medallion, she froze from an overabundance of power. This time, she was sure she could handle the power, but didnt get close to the magical medal. Subby had used a special freezing technique to paralyze activity in her brain, as it was easier than the normal freeze. The threat of Frost was eliminated for now, but at a dire cost. Sub-Zero knew this as he lamented over the dead body of Sektor. He had just regained his humanity, and you knew it., he yelled at the unconscious ninja traitor. *****, Ill never forgive you for this.
Earlier, Sub-Zero, Raiden and the other Earth warriors had a rendezvous at their mountain top hideout. Kung Lao reported that he was halfway done with his mission, and awaited new orders, and many other revelations were unveiled. The most significant report was that a quarter of the Lin Kuei squad, including Sektor, Sub-Zero had brought with him in a mission had suffered some serious injuries requiring attention. Raiden decided that these soldiers should go back to Earth to get nursed and healed, and that replacement soldiers should be brought back while these warriors trained some more under Denowa. Soon these injured warriors would fight again in the war, but now they needed to get back to Earth. Raiden would teleport them to a secret location, where Cyrax would take them to the Earth OIA portal via his arm panel.
Maybe it was the Deja-Vu type situation. Maybe it was her desperation. All Sub-Zero knew is that as Raiden disappeared into the night, he felt sharp pains in his left leg. He looked and saw an ice dagger in his quadriceps. No sooner than Subby had realized that the dagger was in Frosts sloppy style did the Cold- Sore side- kick him in the stomach. The Grandmaster was being attacked, but Sektor was the only one who wasnt too injured or too busy setting portal coordinates to do something about it. He attacked, and had the upper hand for about 9 seconds before the new cold kid on the block stuck her finger into one of the ruptures on his damaged robot body and froze away. After that, all it took was a strong kick to the midsection for her to do the noble Ketchup in for good. Cyrax and Sub- Zero were devastated to witness the first loss of a Neo- Lin Kuei member. Frost turned to finish what she was doing before, only to see and feel an icy mist coming from Sub- Zero s fingers go through her stylish mask and enter her nose. The comatose state she was in afterwards would only last for hours.
Cyrax was stunned at what just happened and stopped development on the portal to have a moment of silence for his fallen Lin Kuei buddy, as Sub-Zero worried more about how he would tell Banner (the scientist who had worked so hard on regaining Sektors humanity and had acquired a friendship with the Crimson cyborg) the devastating news more than his own wounds.
Cyrax was soon done setting the coordinates, and everyone there including Frost were back on Earth in no time. Cyrax spun his robot head around until the weird tassels on his helmet had the flight capabilities of a helicopter, and lifted Grandmaster Ice to the LK headquarters. Sub-Zero said he would take it from there, as Simia began to heal him. Cyrax went back to OIA and Outworld, while Sub-Zero told Banner of what happened and questioned himself for thinking he had converted Frost. As soon as he was able to walk again, he transported back to where the others were Iceman style and brought them back. Everyone was healed excluding Frost.
Sub- Zero became so pensive over what to do with Frost that he fell asleep. During this nap, he had a dream where not only the spirit of Sektor, but also the spirit of his older brother told him what to do. He soon awoke from his little slumber and told Banner of his solution that would ease the good doctors pain towards the loss of an excelsior achievement and a friend such as Sektor.
This miraculous solution? Simply make Frost the new Sektor! Banner has always had the capability of such a feat with his expertise on human anatomy, mechanics, and special gismos, but wouldnt do it to anyone because of what it would do to their humanity and possibly their soul. Needless to say, Frost was a special case.
It wasnt as hard or long an operation as you would have thought. It only took 24 hours, from which you could subtract the eight hours of sleep the good doctor got. Banner did it with the help of a special kit he had made throughout his creation of many robots. Frost was altered in the same way as Sektor and Cyrax; only she had a specific ability.
She had to be alive but unconscious during the operation (something Banner accomplished with the help of many drugs) for many reasons. The only problem with this was that her memory could resurface. To further heighten the chances against this happening, Banner made the new Sektors abilities revolve around fire. Ironically, he was about to upgrade the original Sektor with the mechanisms that would have made this possible, so the upgrade part of the operation only took 2 hours.
With new orders, Neo-Sektor was ready to roll. Sub-Zero questioned whether or not what he had had done to Frost was truly the right way to go as he took the new robot and his hand- picked replacements for the war against Kur-Ang to OIA to meet with Cyrax as scheduled
If you have any interest in my entire MK6 story, composed of only 3 returning characters, then
go here. 
. good stuff dude. she's the lin kui bicycle, everyones ridden her. 
