Time for Bios...
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Liu Kang - Having defeated Kronika and taken control of the hourglass, Liu Kang restarted history and thanks to him stopping any and all threats, the New Era would be peaceful. But, now an old threat has returned and it'll take everything he has to save the realms.
Sub Zero - As the Grandmaster of the Lin Kuei, Sub Zero has been leading the way as the main defense for Earthrealm. But, there hasn't been too many threats out there that would require their services, so Sub Zero now plans to make sure everyone knows about the Lin Kuei.
Scorpion - Like his father before him, Scorpion was dedicated to being in the Lin Kuei, so when Sub Zero (his brother) was named Grandmaster, Scorpion was proud. Yet, he feels that Sub Zero's new ambitions could lead into something he fears: Having to fight his brother for control of the Lin Kuei.
Kitana - Kitana has one major role in her life: Protect her sister Mileena as she prepares to become Queen of Outworld. Many people say that Kitana should become the Queen, but she ignores the calls and continues on her duty... even as a dark secret rears its ugly head.
Johnny Cage - Like many a movie star, Johnny got addicted to the fame and glory of being a star... but, the star has all but burnt out. Now fighting to stay relevant, Johnny joins the other warriors chosen by Liu Kang in this next battle.
Kenshi - His family, the Takahashi Clan, was once one of Japan's most respected families until the clan was all but destroyed and their symbol of power, the sword Sento, was taken from them. Those left standing ended up joining the Bakuto, the predecessors of the modern Yakuza. That was 500 years ago and now, Kenshi is tired of the Yakuza life. Having heard the stories of his family's past, he yearns to free them from the Yakuza and restore their honor and glory... but to do so, he must find Sento.
Kung Lao - Born and raised in Fengjian, Kung Lao lived a modest life working the fields. It was honorable, but not glamorous by any means. His greatest fear was that his life would amount to nothing, so he prays that he can one day be part of something bigger... and that something bigger is being part of the warriors chosen by Liu Kang for the next battle. As a warrior, Kung Lao knows that his victories will be remembered forever if he can win.
Mileena - Thanks to her being born by mere seconds ahead of Kitana, Mileena is considered to be the rightful heir to the throne of Outworld. Many people there distrust her because of her impulsive nature and would rather see her sister, Kitana, on the throne... but as she begins her fight for the throne, a sinister threat emerges: Tarkat Disease, a dreaded and usually lethal disease. If this was ever found out, she would have no choice but to fight.
Raiden - Living in the same village as Kung Lao, Raiden was known for his kindness and charity and was more then happy tending the fields and spending time with his family and friends. But, when asked to join Liu Kang and the other heroes, he hesitates... but then realizes that in order to protect his home, he must join them and be the great warrior that Liu Kang knows that he can be.