| Ashrah | female | | |
| Baraka | male | | Baraka led the attack against Liu Kang's Shaolin temple. |
| Blaze | male | | The mysterious Outworld elemental known only as Blaze had long been on a quest throughout the realm. |
| Bo'Rai Cho | male | | The drunken master Bo Rai Cho |
| Chameleon | male | | |
| Cyrax | male | | Cyrax is unit LK-4D4, The second of three prototype Cybernetic Ninjas built by the Lin Kuei. |
| Dairou | male | | |
| Darrius | male | | |
| Drahmin | beast | | An Oni is a deamon from the Netherealm. |
| Ermac | male | | An enigma to all who come in contact with him, ermac's past remains shrouded in mystery. |
| Frost | female | | Sub-Zero had reformed the Lin Kuei clan and held a tournament to recruit the best of the best. |
| Fujin | male | | Better known as the God of Wind, Fujin joins Raiden as one of the last surviving Gods of Earth. |
| Goro | beast | | |
| Havik | male | | |
| Hotaru | male | | |
| Hsu Hao | male | | |
| Jade | female | * | Jade grew up in Edenia, where she was a close friend of princess Kitana. |
| Jarek | male | | Believed to be the last member of Kano's clan, the Black Dragon. |
| Jax Briggs | male | | His real name is Major Jackson Briggs, leader of a top US Special Forces unit. |
| Johnny Kage | male | | A martial arts superstar trained by Great Masters from around the world, Cage uses his talents on the big screen. |
| Kabal | male | | As a chosen warrior, his identity is a mystery to all. |
| Kai | male | | |
| Kano | male | | A Mercenary, Thug, Extortionist Thief - Kano lives a life of crime and injustice. |
| Kenshi | male | | Years ago, the rogue swordsman Kenshi wandered Japan to challenge the greatest warriors. |
| Khameleon | female | | |
| Kintaro | male | | |
| Kira | female | | |
| Kitana | female | * | Her beauty hides her true role as personal ninja for Shao Kahn. |
| Kobra | male | | |
| Kung Lao | male | | |
| Kurtis Stryker | male | | |
| Li Mei | female | | Although quite young, Li Mei grew up in the presence of martial arts masters and can hold her own in a fight. |
| Liu Kang | male | * | Once a member of the super secret White Lotus Society |
| Mavado | male | | The Red Dragon had existed for centuries as a secretive criminal organization. |
| Mileena | female | * | Serving as an ninja along with her twin sister Kitana, Mileena's dazzling appearance conceals her hideous intentions. |
| Mokap | male | | |
| Moloch | beast | | Moloch resided in the 5th plane of the Netherrealm for centureies. |
| Motaro | beast | | |
| Nightwolf | male | | Nightwolf works as a historian and preserver of his peoples culture. |
| Nitara | female | | |
| Noob Saibot | robot | | |
| Onaga | beast | | |
| Quan-Chi | male | | A free roaming sorcerer powerful in the black arts. |
| Rain | male | | |
| Rayden | male | | In Mortal Kombat I for arcade, the very first Mortal Kombat game, his name was Raiden. That is the official spelling of Ed Boon and John Tobias, the makers of Mortal Kombat. |
| Reiko | male | | |
| Reptile | beast | | As Shang Tsung's personal protector the elusive Reptile lurks in the shadows stopping all those who would do his master harm. |
| Sareena | female | | In the Netherealm demon, Sareena,lost her human form in an attack from the fallen Elder God, Shinnok. |
| Scorpion | male | * | Like Sub-Zero, Scorpion's true name and origin are not known. |
| Sektor | male | | Sektor is actally the code name for unit LK-9T9. |
| Shang Tsung | male | | |
| Shao Kahn | male | | A civilized realm known as Edenia was once a living planet similar to the earth. |
| Sheeva | female | * | Sheeva was hand picked by Shao Kahn to serve as Sindel's personal protector. |
| Shinnok | male | | |
| Shujinko | male | | |
| Sindel | female | * | |
| Smoke | male | | In his human form smoke was a lethal assassin working for the Lin Kuei. |
| Sonya Blade | female | * | Sonya is a member of a top U.S. Special forces unit. |
| Stryker | male | | When the Outworld portal opens over a large city in North America, panic and chaos rage out of control. |
| Sub-Zero | male | | The actual name or identity of this warrior is unknown. |
| Tanya | female | | As the daughter of Edenia's ambassador to new realms, Tanya invites a group of refugees fleeing their own world into the safety of Edenia. |
