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Raiden: Mortal Kombat
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Raiden's name is spelled Raiden in the original arcade iterations of the Mortal Kombat games, and in every game released since Mortal Kombat 4. The console ports released up until MK4, along with both movies and the Malibu comic book series, changed the name to Rayden. This was allegedly because of copyright issues as a shoot 'em up was named Raiden, or possibly to keep from confusing of Raiden from the Fatal Fury series, who was seen as a large wrestler.
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In the first Mortal Kombat movie, Raiden remains the guiding god of thunder, bent on doing all within his power to help the warriors of earth gain victory. According to the movie, Raiden is forbidden from directly interfering in the tournament of Mortal Kombat. Raiden ... possesses a sense of humor which the other characters seems not to share, often prompting him to apologize after making dry remarks.
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One year later, after Liu Kang's triumph in the tournament, Raiden found that he had no choice but to accept Shang Tsung's challenge of Mortal Kombat in Outworld. However, again aided by Liu Kang and the warriors of Earthrealm, Raiden prevailed over Shang Tsung's treachery and Shao Kahn's brutality.
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When Outworld and Earth merge, Raiden finds himself battling Shao Kahn without the assistance of the Elder Gods. The Thunder God must transform into a mortal in order to exist in the combined realms.
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Some time later, Shang Tsung invited Raiden to participate in Mortal Kombat. Aware of the threat posed by this tournament to the future of Earth, Raiden took the form of a human to compete.
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