Sakaar (Earth-5180)

Sakaar is a planet on Sector 2178 and the homeworld of the Sakaarans. Aliens from all over the galaxy were captured and brought to Sakaar in order to compete in the Contest of Champions, a deadly series of gladiatorial games hosted by Thanos.

Early History
Sakaar is a desert planet that was ruled by a monarchy in the past. It eventually was taken over by the tyrant Thanos, a former adviser of the former rulers, after he poisoned and killed them.

Because Thanos had poor knowledge of how to properly govern the planet, famine and misery soon started hitting the populations. In order to fool the Sakaarans into forgetting about their social issues, Thanos developed the Contest of Champions, a deadly series of gladiatorial games set at the Jartar Arena, in the planet's capital of Kuma.