In the Tayo star system, Sakaar is a trash planet encircled by numerous wormholes that collect space junk. The Sakaarans call Sakaar their homeworld, though a variety of other species also call it home due to stranded beings.
When Hela (Cate Blanchett) was on the Bifrost in the movie Thor: Ragnarok, she cast out her brothers Thor (Chris Hemsworth) and Loki (Tom Hiddleston), who both crashed on Sakaar at different points.
There, Valkyrie (Tessa Thompson) kidnapped Thor and sold him to The Grandmaster (Jeff Goldblum), the leader of Sakaar.
The Grandmaster is the king of Sakaar and the brother of The Collector/Taneleer Tivan (Benicio del Toro). He enjoys playing games and controlling lower life forms.
It's hardly unexpected that there are genesis hypotheses for Sakaar given that the majority of its background in the MCU is unknown, and one of them connects it to Tony Stark.
The idea, which was posted on Reddit, contends that when Iron Man fired the nuclear missile through the wormhole toward the Chitauri fleet at the conclusion of The Avengers, he unintentionally created Sakaar.
Although the theory builds on Iron Man's MCU legacy and links him to a region of this universe to which he had no connection, it falls short primarily because of The Grandmaster.
Iron Man couldn't have built Sakaar since the eccentric monarch of Sakaar is frequently considered to as the planet's creator because he was there before anybody else.