Raiden is the eternal God of Thunder and former protector ofEarthrealm. After the second defeat of Shinnok, he ascended to the status of Elder God. Being a god, he possesses many supernatural abilities, such as the ability to teleport, control lightning and fly. As a god, he is used to thinking in terms of eternity rather than normal human lifespans, and so he has a radically different outlook on life.
Although being formless and ethereal, Raiden often takes form on mortal planes. As such, he appears as a fully-grown man wearing predominately white robes and a blue vest, his face usually shadowed by a straw hat. The effect is enhanced by his glowing blue eyes that radiate with electricity and long white hair, befitting of his god-like status. In Mortal Kombat: Deadly Alliance, one of his outfits is finished by a flowing blue cape. Lastly, his power is so great that he constantly radiates with lightning energy, electricity constantly dancing and crackling around his being. InDeception and Armageddon, his visage is warped by Onaga's malevolent aura when he sacrifices himself, reforming as a dark warrior dressed in black robes and dark armor, his eyes changed from a soothing blue to a belligerent red. His cape was changed to a subdued red and appears tattered at the end. Due to the events of Mortal Kombat (2011), this change was rendered null.
Good, although in Deception and Armageddon, he is been depicted as an angry and vengeful god who, in his game ending, killsShujinko for endangering Earthrealm (in other words, he's tired of humans putting the world in frequent danger, and he wantsEarthrealm to "stay safe"). This is mostly because of the corruption that happened to him after he sacrificed himself in the fight with Onaga. As of the Battle of Armageddon, he appears to have been restored to the side of good by Fujin and Kung Lao.
Interestingly, his MK ending also humorously depicted him inviting other gods to compete in Mortal Kombat, and it resulted in the destruction of Earth (however, this was before his role as a mentor to the heroes had been established and the ending is non-canon).
It's worth noting that in production art unlockable in the "Krypt" inMortal Kombat: Deception, the new Raiden design used after the revival of Onaga (black and generally darker in appearance than in previous games), is described as belonging to "Dark Raiden." Additionally, during an encounter with Shujinko in Konquest mode, the new "dark" Raiden offers to train him and warns him that he's "not the Thunder God you once knew."
In MK (2011), Raiden appears in his original form, although his "Dark Raiden" outfit is his alternate costume.
Raiden is the god of thunder and lightning, and as such, he is immensely powerful and has complete control over electricity. He usually keeps behind the scenes in the games and rarely fights, although one notable exception was in Deception, where he fought both Quan Chi and Shang Tsung, and was able to hold his own for most of the fight. Using the element of lightning, Raiden can fire torrents of lightning or concentrated blasts. He also has the ability to fly, which he uses to fling himself at an opponent and shove them into a wall. He also has the ability to teleport to another destination by transforming his body into an ethereal state. Despite his godly status, he is not indestructible and has limits, though it is unlikely he can ever truly be killed. Raiden, like any other god, will have his powers taken away should he enter a domain not native to him, with Outworld being the most prominent example of this. His powers can return to him once he returns however. It is also because of his godly status that he is forbidden to directly participate in any Mortal Kombat tournaments unless he takes on a mortal form.
In the first Mortal Kombat movie, Raiden is portrayed by Christopher Lambertand 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 also possesses a sense of humor which the other characters seem not to share, often prompting him to apologize after making dry remarks.
In the 1997 sequel, Mortal Kombat: Annihilation, Raiden is portrayed byJames Remar and is revealed to be low in the hierarchy of the gods, as he must seek their guidance when the emperor of Outworld, Shao Kahn, begins his invasion of Earthrealm. Raiden had a tattoo of a dragon on his right shoulder blade that was given to those who carried his family's bloodline. (It also allowed its bearers to travel between realms.) Shao Kahn also carried this same tattoo, and was revealed to be Raiden's brother while Shinnok was Raiden's father (This is a non-canon event created specifically for the film.). Mileena and Cyrax sported temporary versions that flew off when they were defeated. Many fans dismissed this as just another example of how far-fetched Mortal Kombat: Annihilation was from the games. Raiden does not have his movie tattoo in either Mortal Kombat: Deadly Alliance or Mortal Kombat: Deception; this can be seen on his alternative outfits as both have one of his shoulders bare, and in the games, his status among the Elder Gods varies so much it could be said he had attained the power to traverse realms at some point and never needed such a mystical tool. In Mortal Kombat vs DC Universe, however, Raiden's bio states that he and Shao Kahn are brothers, although the game itself is not canonical.
Clancy Brown provided the voice of Raiden in the 1996 animated series Mortal Kombat: Defenders of the Realm. Like many of the other characters, Raiden is based on his movie incarnation and often speaks in a tone of sarcastic wit. While still the leader of the defenders, Raiden will not hesitate to fight alongside his allies to give them the fighting edge. The episode Resurrection in particular is the first time in the franchise to show Raiden's overwhelming fighting experience, almost defeating Shang Tsung single-handedly without the need for his ethereal powers.
Raiden also appeared in the animated film Mortal Kombat: The Journey Begins. He instructs Liu Kang, Sonya and Johnny Cage about the nature of Mortal Kombat as well as the background of Shang Tsung's minions, including that of Goro, the Great Kung Lao, Scorpion and Sub-Zero while ordering Tsung not to try to kill the Earthrealm warriors before the tournament begins.
Jeffrey Meek played an oddly, less-serious yet still wise Raiden in the live-action series Mortal Kombat: Conquest.
Canadian actor Ryan Robbins portrayed Raiden in the 6th episode of Mortal Kombat: Legacy. In the episode, Raiden arrives to Earth to participate in the Mortal Kombat tournament, but is taken into custody by the personnel of an asylum, who mistake him for an inmate. Declaring himself "Raiden, the Thunder God and protector of Earth" only confirms to the psychiatristhis mental "disease", and he starts a therapy by force, continuously drugged in order to lower his "unusual physical strength". When Raiden, after three months, still refuses to admit he's just a normal human, the psychiatrist has him lobotomized. Raiden, however, heals immediately after, and, after asking the help of an inmate girl, Blue, starts a riot, during which the personnel hits him with tasers, having the only effect of recharging him and making him more powerful. At the end, the psychiatrist hits him in the forehead with a tranquilizer gun, thus incapacitating him. Raiden is lobotomized once again, and left on the hospital's table. In there, he's reached by Blue, who, under his previous instructions, stabs him with a surgical instrument, so releasing Raiden from his actual physical form and allowing him to incarnate himself somewhere else. After a thunder storm, Raiden appears in China, ready to take part in the tournament.