Is Shao Kahn Raiden's brother?

I know it was something in the movie, but I realized the other day that I don't hear about it in any of the games even though it feel like they hint that there's a personal beef between them.
Did they ever retcon this or is it like an MLP thing where it's purposely left vague so fans could have their own theories that're as valid as anyone else's?
Best Answer
All of the canon information for the games can be found here;
http://mortalkombat.wikia.com/wiki/Raiden
http://mortalkombat.wikia.com/wiki/Shao_Kahn
There are currently two timelines. When the game rebooted at MK9, it starts from the first tournament where Raiden does do the same mistake of defeating Shao Kahn BEFORE Kahn entered the forbidden earth realm. This action eliminates Shao Kahn for good at the end of MK9. Shao Kahn is a resident and the emperor of the outworld, whereas Raiden is a god. They have different species. So they can't be relative in the game series' setting.
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Who is Raiden brother?
Fujin (\u98a8\u795e) is a character in the Mortal Kombat fighting game series. The God of Wind and one of the Protectors of Earthrealm, he is the younger brother of Thunder God Raiden and one of the few playable Gods to appear in the series. He has been a supporting character throughout the series.Are Raiden and Shinnok brothers?
Eric Snider of Film.com remarked in his review of Mortal Kombat: Annihilation, "We find out that [Raiden] and Shao Kahn are actually brothers, and that their father, the evil Shinnok ... is one of the Elder Gods.Opening (Raiden vs Shao Kahn) | Mortal Kombat: Annihilation (1997)
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