In Marvel Rivals , you can usually hide the hotbar/HUD by using the toggle UI control. On PC, one guide says the default shortcut is Ctrl + M ; on console, you can bind Toggle UI in the settings menu under controller/UI options.

How to do it

  1. Open Settings.
  2. Go to Controller or UI settings.
  3. Find Toggle UI.
  4. Assign it to a button if needed.
  5. Use that button to turn the HUD on or off during play.

What it hides

This shortcut can remove on-screen elements like the health bar and cooldowns, giving you a cleaner gameplay view.

Roblox Rivals note

If you meant Roblox Rivals instead of Marvel Rivals , the available public results I found point more toward general settings changes, not a confirmed hotbar-off option.

TL;DR: For Marvel Rivals, try Ctrl + M on PC, or bind Toggle UI in settings to hide the hotbar/HUD.