Hammer Bro

Hammer Bros. (also spelled out as Hammer Brothers and sometimes formatted without the full stop) are Koopas that stand upright and throw hammers at the player, first appearing in Super Mario Bros. They have bigger shells than Koopa Troopas and wear helmets. Hammer Bros. have several times been described as elite members of Bowser's Koopa Troop. They were originally designed by Kazuaki Morita.

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