Axe
The Axe is an item in the castle levels of the original Super Mario Bros. Mario or Luigi could defeat Bowser or his duplicates by touching the Axe, which would cut the support of the bridge Bowser was standing on and send him falling into the lava below. When Mario and Luigi did not have the Fire Flower, using the Ax was the only way they could defeat Bowser.
Due to the nostalgia of Super Mario Bros., the Axe (which played a major role in its boss battles) has managed to earn Bowser-related appearances to this day. For instance, in Bowser's court in Mario Hoops 3 on 3, the basketball hoop's pole is a giant Axe. It also appeared in Mario & Luigi: Superstar Saga, where it cameoed alongside a paper duplicate of Bowser in a Super Mario Bros.-reminiscent section of Bowser's Castle. In New Super Mario Bros., the Axe was replaced by a Skull Switch in that game's Bowser battles.
