Boss Brolder

Boss Brolder is a boss that appears in Super Mario 3D World as the boss of World 4-Castle: Lava Rock Lair. He is a large Brolder covered with pieces of rock and crystal of various sizes, with a large chunk of crystal acting as his nose. He has glowing yellow eyes and his arms are made of lava.

Boss Brolder serves as the fifth boss in the game and the boss of the fourth world. His main attack is attempting to roll into the player, much like normal Brolders. He can also spin around and scatter several flaming rocks in different directions. Later in the fight, he targets one of the players while he is spinning, slowly moving towards them. Boss Brolder also summons Brolders in the fight to assist him.

Boss Brolder is impervious to the player's jumps. Instead, the player must first stun one of Brolders he summons and then throw it at him. After Boss Brolder is hit three times with another Brolder, he is defeated.