Above the Marvel multiverse, there is an existence that no one knows, and no one can check or balance - the God of Fun.
There is no entity, no position, no good or evil. The only pleasure is to watch the plot reverse and break the established fate.
He is omniscient and omnipotent, and can tear apart dimensional walls at will, tamper with the rules of the world, and release extra-dimensional power, just to turn ordinary heroic epics into absurd and exciting pranks.
Iron Man, Captain America, Spider-Man
Thor, Hulk, Star-Lord, Black Panther... All the heroes you are familiar with have led to completely different lives because of his temporary interest.