Let me try. I am not so good in english, but hope that you understand.

I am Sonya Blade, liutenant of the US Special Forces. We were on a mission to capture the Black Dragon member known as Kano. My team followed him until he enter in a strange ship. All of my unit followed the ship until the arrive in an island that were not show on our maps. In this strange territory, my team was captured. An old man called Shang Tsung said to me that he will release them if I fight in a tournament. I accept. The rescue of my team is at my hands. But one question still bothered me: where is Kano?

Liu Kang:

"I was once a member of the White Lotus Society: I have heard many tales of the Mortal Kombat Tournament and the legend of Kung Lao. I returned to the Shaolin Temples and asked for permission to represent them. I was granted my request.

Though my training with Bo' Rai Cho has been vigorous and hard, I believe I can defeat both Goro and Shang Tsung. Goro has grown overconfident, I believe I can use that to his advantage. I have been told that I am the best hope Earth has to save it from destruction."

Well good ones! I'll add Scorpion's Alt Bio and join it with both Sub-Zero's bios for MK1. Hope you enjoyed it:

Scorpion
Alt. Bio:
Since my dishonorable defeat, I had trained to use the rage burning inside me as force. I had focused my rage into my target, and learned to use it efficiently. All this time I have dreamed with a chance at even the odds. And, after two years of damnation, I'm receiving my chance. My demons are leting me enter the Mortal Kombat tournament, but with a prize. I do not know what prize it could be, but I am more than willing to sacrifice anything, even my existence itself, to that chance.
I will crush him certainly, but it will be in combat. Not cowardly from the back, in a head-to-head confrontation. In that moment, he will sense the real fear of the demon he had created, the spectral Scorpion!

Sub-Zero (Older)
Bio:
An assasin, that's the best description you would get. An assasin working for the Lin Kuei, the most feared assasin clan on China. I had killed since my earliest days, following the lineage of loyalty of my ancestors. This tournament isn't more than another mission. Altough the owner, Shang Tsung, had invited me personally, I received another instructions. Apparently a wealthy enemy of him contracted my service to clean the earth of his existence. It is the perfect chance at the tournament, since he will not know about my plans. When the tournament ends, I have other plans in mind that even the Lin Kuei didn't know.

Alt. Bio:
Before I had killed many men. More than I can think of, but the idea of someone returning from the graveyard to haunt me never plagued my mind...until now. I have found him, or rather he found me in Shang Tsung's boat. He has set to battle me in the tournament face to face. Altough it was my fault to not give him mercy when asked, he also seeks revenge for his clan and family. I was not the one who orchestrated that attack, but rather my masters. I know he will not hear to reason, so I'm trapped to fight with him eventually. I have bested him before, why I couldn't this time?

What happened with all those talented writers I found before?? That's a shame, really. But still I'm coming with some bios I made just for the interested...My new ones are:

Liu Kang

Bio:
Since childhood, the elder of the Order had taugh us about the legends of the Outworld, the Elder Gods and the protection that Mortal Kombat brings to our planet. But they also told us about the disgrace that succumbed when the evil demon sorcerer Shang Tsung took the tournament to himself. Since that day, he was winning to bring Outworld into our realm. Since that I trained myself to some day represent my order in the tournament. First by myself, then at the wing of the legendary Master Bo'Rai Cho, who taught others before me to the same ordeal. From him I learned his best move: the Flying Kick. After my training was complete, I received the invitation. I know just what to do.

Alt. Bio:
When I returned to the Order of Light to ask permission to defend our planet, I received a shocking new: The champion would never age, and had to stay forever in Earth until his defeat in Mortal Kombat. It's a hard decision to make. Will I have the strenght to live eternally, seeing my fellow brothers age and depart? Will I have the will to stand in the lonely life of the champion? I don't know if I'm truly ready, but time is scarce. Master Wu gave me permision, but granted one last advice: "Your spirit and mind must work as one if you seek triumph. Don't let the confusion or fear misleads your path". With that in mind I entered Tsung's netherboat, with the fate of the Shaolins at my hands.

Raiden

Bio:
I'm been the Protector of Earthrealm since its origin. Always fighting multiple evils that wish to take it all. But after 9 consecutives loses, what hope could I still retain?. Nonetheless, that cursed sorcerer had summoned me to be in a first-class seat, seeing his final victory, the one who will open the portals and allow his master, the treacherous Shao Kahn, to invade and take it all. I'm to enter this tournament, but I'm not allowed to defeat Outworlders nor win this contest, since that would be taken as an instant forfeit. I'm only to watch, and guide...

Alt. Bio:
I had scouted the souls of more than a thousand warriors who made into this island. And so far only three had showed a spark of hope to the realm. There's an actor, who suffer from overestimation and ego; an U.S. militia girl, who has personal affairs in mind; and a Shaolin Monk, who has doubts and fears inside his mind. I also had recognized Sub-Zero, whose soul is still tainted with evil. Apparently he chose to not heard my advice. Of the three chosen, one will be the champion of Earthrealm. So my new objective, as God of Thunder, is to guide the three to overcome their inner demons and conquer their foes in battle. If that's not enough, I fear this realm is damned forever...

Hope you liked it and awaiting some comments on those, as well another who feels like showing his/her talent at writing. Until then goodbye everyone!