I can definitely see it being Fujin

But I could see it being Bo Rai Cho too. He has a lot of evidence.

-Appeared in the Shaolin Trailer

-Important to the Lore.

-Trained Kung Jin

-On the Leaked Casting Call and labeled a main.

-All the other mentors are in.

-Ed Boon obviously likes him.

-Someone dared Ed Boon to put Bo Rai Cho in the game and he said well in that case....

-Ed Bokn has hinted at him a couple times.

Ron Tan Cho was also on the casting call for the webseries and Cary Tagawa was also confirmed to return as Shang.

Where are they?

Blood God Reiko with an Shao Kahn variation

I feel like Ron Tan Cho will be the Main villain for the webseries. Shang was confirmed for the webseries?

Assuming that we haven't already seen the unlockable fighter and it isn't just random select, it's presumably Fujin, Li Mei, Rain or Bo Rai Cho since they're in game and have an updated model.

More than likely, the unlockable fighter is Raiden, Shinnok, Liu Kang or Kotal Kahn.