One area where Marvel Rivals' roster could be improved is with its villain representation. While characters like Magneto, Loki, and Hela are great to see, Marvel Rivals currently has far more heroes than villains, though that could soon change with Ultron leaked to be joining the game sometime in the future. However, Marvel Rivals' roster wouldn't be complete without arguably the most famous Marvel villain of the modern age: the Mad Titan Thanos.