Rain

Rain is another son of Argus and a villain from the Mortal Kombat series of fighting games.

Early Life
Rain was born in Edenia and when he was very young, he watched as his realm was invaded by Shao Khan and the forces of Outworld. As chaos enveloped the realm, he was smuggled away at the behest of his adopted father, a general in the Edenian army who stayed behind to perform his duty. However the realm's forces were crushed and Rain's fathers was killed by Shao Kahn.

Mortal Kombat 3
Millennia later, Rain resurfaced during Shao Kahn's invasion of the Earthrealm, but was attacked by the emperor's extermination squads. He was given a choice, fight for Kahn or die, and chose to join Shao Kahn, either out of fear or ulterior motives, turning his back on Edenia. Rain fought against Earthrealm's forces, until Kitana confronted him and told him that Shao Kahn had killed his father. Enraged, he turned on the emperor and embarked on a mission to bring him down.

Mortal Kombat Armageddon
As the final battle of Armageddon drew closer, Rain found out about his true origins from Quan Chi, who told him that his true father was actually Argus, Edenia's protector god. He began to refer to himself as prince of Edenia and continued to fight on the side of evil. Rain sought to kill his two half-brothers, Taven and Daegon, and then claim the ultimate prize and power promised for defeating Blaze. He eventually tracked Taven to Artika and fought him, only to be defeated and disappeared in a watery portal.

In his ending, Rain was revealed to be Taven and Daegon's half-brother and Argus had tried to keep his identity secret. He defeated Blaze and gained full godhood with Argus declaring him the new protector god of Edenia. But Rain instead used his power to enslave the realm and due to Argus' position as an Elder God, could not do anything about it.

Powers
Rain is a skilled fighter and possesses great power due to being a demigod. However unlike the other sons of Argus, Rain does not control fire, he can manipulate water and lightning. Rain is able to fire a powerful blast of water from his hands or feet that he can use to propel himself forward or to blast opponents, call down a lightning bolt on his foe, fire an orb of water that allows him to stun his opponent and move their body around, and submerge himself in water then reappear behind them. Rain can also perform a powerful roundhouse kick that knocks the opponent to the other side of the screen.

Trivia

 * Rain appeared in Mortal Kombat: Defenders of the Realm, Rain was once engaged to Kitana, causing tension between him and Liu Kang. He also had a former relationship with her in Mortal Kombat: Conquest.


 * Rain was originally a red herring character shown in Mortal Kombat 3's intro, but wasn't actually in playable until Ultimate Mortal Kombat 3. Many players searched for him in vain until they realized that he was a joke character (a parody of the Prince song, Purple Rain).


 * Despite Rain being considered somewhat of a joke character due to his pointless role in the arcade games and having only a few appearances, he has a large number of fangs.


 * His biography was originally going to be that he was a Lin Kuei member that left the clan to join Shao Kahn. This bio was given to Tremor, except he joined the Black Dragon instead of Shao Kahn.


 * Rain appears in the Dark Prison stage of Mortal Kombat Deception along with many other characters. He also appears in Konquest Mode and if the player speaks to him, he asks them to find a dagger.