MKX komic #6 Kotal Kahn's origin...
SPOILERS!
Kotal Kahn was from the realm of Osh-Tekk, son of Kotal K'etz. They were so powerful that they forgot the meaning of defeat until Shao Kahn (accompanied by Goro) slaughtered and conquered them.
In return for Kotal K'etz's obedience, he was allowed to keep what Shao Kahn believed was a simple treasure. Revealed to be a portal stone and not an ordinary gem, Kotal K'etz sent a young Kotal Kahn to Earth as a form of initiation for the throne. Kotal Kahn travels the deserts and tundras of Earth, finds the Amazonian people, noticing their culture was similar in ways to his.
The day he arrives, the Spanish conquistadors arrived, Kotal Kahn slaughtered them and became the ruler of the tribe, revered as Buluc, the War God. He taught the tribe the ways of his people, including drinking the blood from the hearts of their enemies. Defeating the conquistadors, Kotal Kahn grew restless and returned to Osh-Tekk using the portal stone to see if he was worthy of replacing his father as ruler, his father said he was not, that his son's actions were blind. An angry Kotal Kahn leaves to return to Earthrealm, telling his father to keep the throne, he has his own.
Returning home, he finds the tribe dead, poisoned and diseased by the bacteria in the blood of the foreign enemies.
Present day, Kotal Kahn is Emperor of Outworld, having defeated Mileena's forces and driving them underground, he is telling the previous part of the story to rally his army, telling them how he learned his lesson, that, no matter how small the enemy forces are, they need to be wary of them and wipe them out.
Golden Desert; Reiko bows to Mileena saying the Red Dragon has accepted his/their "plan". Mileena say she needs a prince, takes off her mask showing her nasty looking face (especially in this depiction), and offers the position to Reiko.
Later, Mileena offers to restore the Shokan to their former glory if Goro eliminates Kotal Kahn.
Goro accepts...