Name: Quan Chi
Origin: Unknown
Race: Free-Roaming Sorcerer
Playable Debut: Mortal Kombat 4
Unplayable Debut: Mortal Kombat Mythologies: Sub-Zero
Story: Shinnok was banished to the Netherealm by Rayden. Upon entering the realm, he found himself immediately under attack by its then ruler Lucifer, as well as those souls he was personally responsible for banishing when he was an Elder God. Locked and shackled, Shinnok was helpless against his attackers. He would exist, tortured and tormented by the dregs of hell for thousands of years. Until he met Quan Chi.
Quan Chi is a free roaming sorcerer. That means that he can travel the various planes of reality without detection from their gods. It also means that over the years he has obtained great power. Aware of Shinnok's dilemma, Quan Chi traveled to the Netherealm and made the fallen god an offer. He will free him from his confines and assist him in defeating Lucifer and his minions in exchange for power and the ability to rule at his side if and when he escapes the Netherealm entirely. Shinnok agreed and the two waged a war in the Netherealm that lasted for centuries. But, the ex-Elder God eventually won as he viciously slew his former master. Then, after imprisoning his enemy's surviving essence, he took his seat as the new ruler supreme of the dead realm.

Shinnok, however, had nothing to rule. The realm was a desolate wasteland of fire and brimstone inhabited by grotesque demons that smelled of the foulest stench. So, he decided to create a physical world, trying his best to emulate the realm he wanted so badly… Earth. He took the demons of his realm and transformed them into as human a form as possible. But unlike the Outworld, which became a wasteland after Shao Kahn sapped its energies, the Netherealm can never be a living planet. It will always exist as a dead world. It's true form hidden by its ruler.
Centuries would pass, and Quan Chi had exhausted all methods of freeing Shinnok until an upstart sorcerer known as Shang Tsung approached him. Shang Tsung's essence was created on Earth. He obtained his ability as a free roaming sorcerer by assisting Shao Kahn who was at the brink of taking the Earth for his own through Mortal Kombat. Shang devised a way to virtually assure their success. But, it required the assistance of Shinnok.
When Kahn defeated a realm called Edenia and transformed it into the Outworld, he also acquired that realm's Queen, Sindel. But the thought of serving under Shao Kahn drove her to madness, and she took her own life. Enraged by this event, Shao Kahn withheld her soul from moving to a higher existence. Instead, he held it as his own prized possession. A token of his victory over Edenia's former king Jerrod and a constant reminder of his power to Queen Sindel's daughter the Princess Kitana.
These events enabled Shang Tsung to strike a bargain with Quan Chi. If Shinnok would take Sindel's soul, taint it with evil and reincarnate it on Earth… Shao Kahn could step through the dimensional gates separating the two realms and reclaim his queen, thus enabling him to overtake the Earth and bar Rayden and the Elder Gods from intervening. An event that would take over a decade to accomplish- a rather short amount of time considering what Shinnok has been through.
In exchange for Shinnok's assistance, Shang Tsung would reveal to Quan Chi the location of the map that would lead to Shinnok's sacred amulet. But, Shang Tsung failed to inform Quan Chi of the elemental guards that protect the amulet. Their mere existence makes it impossible for Quan Chi to enter the temple where the amulet rests. But, if he could get a human to enter, the right human, one who could perhaps defeat the elements…
Sub-Zero, a cold-blooded Lin Kuei warrior was this human. Quan Chi hired him to retrieve the amulet from within the temple of the Elements. Sub-Zero succeeded and delivered the amulet to Quan Chi. Unfortunately, Rayden discovered this, and banished Sub-Zero to the Netherealm; he was not to return unless he had the amulet.
Quan Chi pitted his Sisterhood of the Shadow, three deadly assassins, Kia, Sareena and Jataaka, against Sub-Zero. He defeated them and managed to steal the amulet back from Shinnok and return it to Rayden.
Quan Chi sorely stood by Shinnok for the next decade.
Shinnok was finally finished with Sindel's soul, and Quan Chi delivered it to Shang Tsung. The invasion began, and ended, within the year.
Two years later, Quan Chi struck a bargain with Tanya, the daughter of the Edenian Ambassador to New Realms, if she would give them passage to Edenia, she would be greatly rewarded. Shinnok gathered an army of darkness, and decided that it was finally time to enact his revenge on the Elder Gods.