- "There is Tarkatan in you..."
- ―Bo' Rai Cho, to the Alien (from Mortal Kombat X)
The Tarkatan Xenomorph, known as Alien in-game, is a Xenomorph born from the body of a Tarkatan warrior. It, alongside the Predator, features as a downloadable guest character in the 2015 video game Mortal Kombat X.
Though the Tarkatan Xenomorph shares several traits in common with other Xenomorphs, it also possesses several noticeable differences in appearance when compared to more common variations.
Overall, the creature is bulkier and more muscular in appearance than typical human-spawned Xenomorphs. The typically elongated cylindrical skull is now far shorter, appearing more spherical in shape. The tubes on the creature's back are also shorter and it now possesses larger, more jagged, more vicious-looking teeth within its lip-less mouth as well as small spikes located around the Alien's face. These are a few of the more obvious traits inherited from its host. Perhaps the most notable trait of inheritance however are a set of extendable blades contained in sheathe-like appendages located along the Xenomorph's forearms; these are similar to the sword-like arm blades of the Tarkatan species, albeit the Xenomorph's are segmented instead of smooth.
In MKX, the Tarkatan Xenomorph has three different variations that alters the character's moveset and playstyle, as with all other characters in the game.
The Tarkatan variation focuses on the creature's arm blades and is the most aggressive variation of the three. Many of it's input moves are now replaced, instead of it's claws, with the usage of it's arm-blades that have longer range. It also gains a few Baraka-esque moves including one in which the Xeno will violently flail it's bladed arms vertically, slashing at the opponent. This variation bears the head similar to the Warrior caste.
The Acidic variation, as it's name suggests, prioritizes on the Xenomorph's highly corrosive acid blood. The acid blood seeping from it's tail can be propelled at the opponent, causing damage over time. It can also be used for long-ranged combat. Additionally, the Xenomorph gains a self-harm ability in which it will begin ripping and clawing at its skin, causing large amounts of blood to gush out onto the floor. If the opponent steps on it, they will take damage. Oddly, the opponent will not take damage to the acid blood that comes out of the Xeno when being attacked (most likely to balance out the character). This variation bears the head similar to a Drone.
This variation changes the Tarkatan Xenomorph the most in terms of appearance; it now gains a small head crest, resembling that of a Praetorian or Queen. This variation focuses on the Xeno using its brethren to assist it in battle. The Xeno can not only now call upon other Xenos to attack the player, (they fall from the screen and attack the opponent before crawling off) but also cause eggs to sprout from the ground. When the opponent is within range, the egg releases a Facehugger that attaches itself to their face, stunning them for a few seconds and leaving them open for another attack.
In the distant past of Outworld, a group of Xenomorphs somehow found their way into the foreign realm and began to establish a colony. The invaders were beaten back and seemingly exterminated by Outworld's forces, but a small clutch of eggs remained hidden deep underground.
When the nest was found by a scouting party of Tarkatans, a Facehugger emerged from one of the eggs and impregnated the leader of the group. Soon afterwards, the Tarkatan Xenomorph burst from its host's chest, quickly growing to maturity and subduing/killing the rest of the party. It then set out to rebuild its hive by harvesting the natives and killing anyone who resisted. It ended up walking right into the trans-realm war to stop/hasten the return of Shinnok, clashing with warriors from Outworld, Earthrealm, and the Netherrealm alike.
After defeating Shinnok in the Jinsei Chamber of Earthrealm, the Tarkatan Xenomorph took many inhabitants of Outworld to the Outworld Hive for harvesting. Its formidable strength was soon bolstered by a new generation of Xenomorph drones; by the time a new Outworld Queen was spawned, the hive had enough strength to overrun the entire realm. Realizing the threat the Xenomorphs posed, Emperor Kotal Kahn attempted to end the infestation with an all-out assault on the hive. However, he and his army were eventually overpowered by the Xenomorph onslaught, with the Tarkatan Xenomorph personally dealing with the Emperor of Outworld.
- Beyond the playable character itself, many other references to the movie Alien as well as Aliens are added to the game by the Alien DLC:
- The Alien's moveset includes multiple references to the films, with many of its kombo moves being named after dialogue or plot points from the first movie, including "Here Kitty, Kitty" (Brett), "Lucky Star" (Ripley), "Kane's Son" (Ash), "Zeta II", "Warning Beacon" and many more.
- The Alien's victory animation after a match involves it taking its opponent to a Hive and impregnating them with a Facehugger. A Chestburster later rips out of them.
- The Alien fatality "Killer Queen" has the Alien summon a Queen that proceeds to impale the Alien's opponent with her tail before ripping them in half — a direct homage to the scene in Aliens in which the First Acheron Queen dispatches Bishop in just such a manner.
- Winning against certain opponents can give rise to unique Chestburster variations, such as a Predalien if the opponent is the Predator or a Chestburster with rock-like skin if the opponent is Tremor. As an additional humorous Easter Egg, this brutality can also give rise to Chestbursters wearing comical accessories, such as the hats of Erron Black, Raiden and Kung Lao, the sunglasses of Johnny and Cassie Cage, the mask of Jason Voorhees, or the faceplate of Kano.
- Selecting the Alien character and playing against Johnny Cage will cause the latter to shout, "It's game over, man!" during intro sequence, referencing Hudson's iconic line from Aliens.