Nightwolf (born Grey Cloud) is a fictional character in the Mortal Kombat fighting game series. He debuted in Mortal Kombat 3 as a Native American shaman and historian who is chosen as a warrior of Earthrealm during Shao Kahn's invasion. As one of the main characters, he was also featured in the game's companion media, such as the live-action film Mortal Kombat Annihilation and the animated series Mortal Kombat: Defenders of the Realm.
He is also playable in the updates Ultimate Mortal Kombat 3 and Mortal Kombat Trilogy. After being absent from Mortal Kombat 4 and Mortal Kombat: Deadly Alliance, he reemerged as a player character in 2004's Mortal Kombat: Deception and also appeared in the follow-ups Mortal Kombat: Armageddon, the 2011 Mortal Kombat reboot and as DLC in Mortal Kombat 11. Response to the character has been mixed, with some citing Nightwolf as an example of a Native American stereotype.
Source: Wikipedia, "[en.wikipedia.org/wiki/Nightwolf Nightwolf]", available under the CC-BY-SA License.