In Marvel Rivals' attempt to be much more than a hero shooter, at the core of its gameplay is a story that centers around a catastrophic event called the "Timestream Entanglement." This event was caused by a clash between Doctor Doom and his 2099 counterpart, who have conflicting views on who is the rightful possessor of the Doom mantle, and the future of their homeland, Latveria. In this clash, a host of timelines were severed and forced to merge, creating Chronoverses that see an army of heroes and villains now with the choice of continuing in their conflict with one another or pursuing the greater good. While Doom and his 2099 counterpart are certainly the reason behind the Timestream Entanglement in Marvel Rivals, however, another Marvel antagonist may end up being more powerful than even him — Knull.