Brolders are enemies that make their first appearance in Super Mario 3D World. They mainly resemble boulders. Their main defense is to roll around the stage, chasing the player. To defeat them, one can jump on them (or scratch when using the Cat Bell), pick them up, and throw them into nearby lava or objects.
The main leader of the Brolders is Boss Brolder who appears as a boss in World 4. He can summon other Brolders but is also known to crush them in order to complete his goals.