Red Bricks are red 2x2 LEGO bricks that serve as a collectible in the LEGO Batman games.
Red Bricks can be found in mission levels or overworlds, where in mission levels there is only 1 per mission. Usually, players will have to go out of their way to get them, whether it be scour a hidden area, destroy multiple of the same objects, or solve a puzzle. Usually, Red Bricks are more hidden than other collectibles such as Minikits, and almost always require Free Play mode to access and collect.
Once a Red Brick is found, its corresponding Extra (or Suit Upgrade in LEGO Batman: The Videogame) will become available for purchase by the player using studs.