The Iron Ball (鉄球) is a trap that appears in Bomberman Quest. It is a large, iron ball that is attached to a chain. It swings around a central Hard Block. Different Iron Balls may swing in different directions and at different speeds. The ball itself will cause one unit of damage to Bomberman if it collides with him, but the chain causes no damage. Bomberman must navigate around the trap on foot unless he can jump or fly over it.
A different type of Iron Ball appears in the final boss cave. It drops from the ceiling and rolls along a path, eventually falling down a pit and disappearing. Iron Balls continue to appear in this fashion as long as Bomberman is nearby. Either the Jump Shoes or Wings may be used to pass over them.