Liu Kang (Alternate Timeline)

Note: This article is referring to Liu Kang in Mortal Kombat's alternate timeline.

Liu Kang is a major character in the Mortal Kombat series. He is the Mortal Kombat Champion of Earthrealm, and a protege of Raiden, the protector-god of Earthrealm. In the majority of the games he was on the side of good. But in Mortal Kombat X, he appears as a minor antagonist (alongside Kung Lao, Sindel, Smoke, Kitana, Stryker, Nightwolf and Kabal) having been revived as a revenant for Quan Chi, and serving as the necromancer's right-hand man.

Mortal Kombat (2011)
Though Liu Kang starts out as Raiden's protege, the relationship between mentor and protege becomes increasingly strained as he watches Raiden neglect his duties as protector of Earthrealm. The first crack appears after Kung Lao's death at the hands of Outworld's ruler, Shao Kahn.

He accompanies Raiden to see the Elder Gods. They try to convince the Elder Gods to stop Shao Kahn, but the Elder Gods refuse to intervene. After returning from their meeting with the Elder Gods, they find to see most of the Earthrealm warriors killed off at Sindel's hands (Nightwolf sacrifices himself to stop Sindel's rampage, while Kitana lays mortally wounded). Kitana dies while holding Liu Kang's hand, and the Mortal Kombat champion becomes convinced that Raiden is slowly losing his grip on sanity; the fact that the thunder god sought Quan Chi's aid further strains this relationship.

After Raiden returns from the Netherrealm, Liu Kang becomes enraged that the God of Thunder has lost it and attacks him out of anger. Raiden defends himself, but in the process, accidentally injures Liu Kang with an electric blast. The thunder god, realizing what has happened, begs Liu Kang to forgive him, but even in his dying breaths, the former champion curses Raiden for his failures.

His Mortal Kombat (2011) ending shows him coming to believe that he should be made Earthrealm's Protector over his mentor Raiden, and that the thunder god was more of a burden than an ally. In a one-match Mortal Kombat tournament, he defeats his former mentor and is made the new Protector of Earthrealm. Shang Tsung's ending in the same game shows the sorcerer with newly increased but out-of-control magical power being trained by Bo' Rai Cho after Shoa Kahn's life essence and sorcery absorbed by his former subordinate in order to defeat Liu Kang, who had descended into madness by becoming a power-hungry tyrant after overthrowing Raiden as Protector of Earthrealm.

Mortal Kombat X (comic series)
It is revealed that Liu Kang's soul was used by Quan Chi to create an undead version of the former Mortal Kombat champion - and Liu Kang actually appreciates his newfound status as a Revenant due to the intense contempt he has for his former mentor Raiden.

He appears in the Netherrealm alongside Kung Lao and Kitana, questioning Quan Chi of their next course of action after Havik's failure to deliver them Shinnok's prized amulet. Kitana states they should go after it, though Kung Lao reminds her that both Earthrealm and Outworld are on high alert after Havik's rampage, and suggests subterfuge using Shinnok's new acolyte D'Vorah, to aid them in stealing the exposed amulet.

Mortal Kombat X
Twenty-five years later, it is shown that Liu Kang is still an undead revenant serving Shinnok and Quan Chi. He, along with the undead revenant versions of Kung Lao, Kitana, Smoke and Sindel become Quan Chi's primary enforcers (with the former champion becoming Quan Chi's right-hand man), and they go to the necromancer's fortress where D'Vorah would be arriving with Shinnok's amulet.

As they arrive at the fortress, a Special Forces team led by Jax ambush them, with Jax (a former revenant turned to the side of good) intending to capture Quan Chi and take him to Earthrealm; Jax and Sareena even lament that Quan Chi's magic has turned the fallen heroes into killing machines, with some of them (Liu Kang, Kitana, Sindel, and to a smaller degree, Kung Lao) actually liking their newfound status as revenants. Liu Kang himself expresses some contempt for Jax, telling him that Raiden failed everybody, but is defeated and Quan Chi is captured.

Liu Kang is then shown in Scorpion's chapter, where he (along with Kitana, Smoke, Sindel and Kung Lao) pledge their allegiance to Shinnok, a fallen Elder God and ruler of the Netherrealm, before proceeding to take Johnny Cage hostage and attacking the Sky Temple. After arriving at the Sky Temple, Liu Kang taunts his former mentor, telling Raiden that it was his fault that he and Kung Lao ended up becoming revenants. He is then seen in Cassie Cage's chapter, where he and the revenants are discussing with D'Vorah on next steps after Earthrealm is destroyed, with Kitana suggesting an assault on the Elder Gods, while Liu Kang looks for the portal to the Heavens.

After Shinnok was defeated at the hands of Cassie Cage, it is shown that he and Kitana have become the Netherrealm's new rulers. Raiden, now bearing a menacing appearance (after he purified the Jinsei and became corrupted as a result), declared that he will not sit by and watch Earthrealm get invaded, but will actively hunt down and destroy those who have threatened Earthrealm in the past. To make his point, he tosses Shinnok's severed but still-alive head, warning that there will be "fates worth than death", leaving Liu Kang and Kitana to stare at the fallen Elder God's head.

His Mortal Kombat X ending indicates that without Shinnok's controlling power, the Netherrealm had fallen into chaos. Though not a sorcerer or a god, Liu Kang's skills as a former Shaolin monk were more than enough to beat the Netherrealm's oni into submission. After this, he assumes control over the realm, and ponders on the thought of conquering other realms. In Jason Voorhees' MKX ending, the former champion takes note of the zombie's killing spree, and offers him to take on even more bodies. But Jason, not liking this arrangement, simply responds by killing Liu Kang - as Jason's loyalty lies to his mother.

Personality
Though he started out as Raiden's protege, he becomes increasingly impatient with the Thunder God's inaction, becoming convinced that Raiden is losing his grip on sanity. The two eventually come to blows, and Liu Kang is killed as a result, but not before the former Mortal Kombat champion calling his mentor out for his failures.

Throughout Mortal Kombat X 's story mode, he becomes increasingly cynical, and rude, thanks to his status as a revenant. Some of his intro quotes have him becoming more of a rude and self-centered warrior, sneering at Kung Jin's homosexuality, is jealous of Johnny Cage taking his spot as Raiden's champion, and even sees himself as above Kung Lao.