For Marvel Rivals , the lobby background can change based on the skin or outfit you equip on a hero. One Reddit thread says purple and gold rarity skins can give customized or animated backgrounds, and then you set that hero/profile so the matching backdrop appears.

How it works

  • Equip the hero skin you want.
  • Set that hero as your showcased profile hero.
  • Return to the home screen and check the lobby background.

What players are seeing

Some players report that the background switches automatically when they swap outfits, while others say default costumes keep the plain gray background. A separate video also mentions that a background-change feature may be coming or being tested, but that sounds like an in-development feature rather than something universally available right now.

Important note

If you meant Roblox Rivals instead of Marvel Rivals, the answer is different: people are posting PC-only methods that involve replacing Roblox skybox files in the game’s install folders. Those methods are unofficial and can be risky, so I’d avoid them unless you’re comfortable modifying game files.

Would you like the steps for Marvel Rivals or Roblox Rivals specifically?