Raiden (MK)

"'I thought this page is about that one ninja dude with a crippling addiction to VR pornography?" If that is the case you are probably looking for Raiden (MG)'

A character summoned by a senator's request on Episode 7 of Season 3.

Raijin
The sworn protector of the Earthrealm and one of the Gods of Heaven, Raiden fought for centuries for Earth and it's freedom, and did so too during the several Mortal Kombat.

Season 3
Now in the modern era, it could be he sensed great evil in a Senator's intentions, or maybe he was just bored, but he descended at his name's calling to participate in yet another, perhaps most dangerous of all, tournament: The Final Rumble.

Feats

 * Saved Earthrealm a number of times.
 * Consulting the Elder Gods.
 * Winning.