Mr. X

Mr. X is a B.O.W. made by Umbrella during the late 90's dispatched to kill everyone in Raccoon City. Expectable, honestly. What was unexpected was for him to join the ring and end up body-slamming everyone with no true goal, even going against Albert Wesker at some points.

He's Gonna Give It To Ya
Sminem worked for a small amount of time on Umbrella Corp. personally creating the Tyrant model T-00 himself. However, after he left, Umbrella wasn't able to replicate his genius genetics, and just made clones of it.

Sminem and Mr.X
During the Sperm Case Wars, Sminem reactivated Mr. X's biological conditioning to be loyal to him, and used him to do his bidding. However, at some point, Mr. X was "hacked" by Wesker and gave him the case.

Season 2
After the end of Season 2, Mr. X quit wrestling for a while, probably terrorizing other cities.

Episode 3
Mr. X is now back, and in a Tag Team with Mrs. X.

Feats

 * Gave it to us.