Hammer Bro
Hammer Brothers are Koopas that stand upright and throw hammers at passer-bys. They have been around since Super Mario Bros..
Variations of Hammer Bros.
Boomerang Bros. - Basically, a Hammer Brother that throws boomerangs instead of hammers. Their uniforms are white, instead of black.
Chomp Bros. - As the name implies, these bulky baddies throw Chain Chomps instead of hammers. They are only found in BeanBean Kingdom.
Fire Bros. - Instead of hammers, these fellows spit fireballs. Their uniforms are blood red.
Sledge Bros. - Monstrously sized Hammer Bros. that can cause small, localized earthquakes when they stomp. They are only found in Giant Land.
Tools
Hammer Bros. Hammer, Hammer Bros. Suit
Famous Hammer Bros.
Paper Mario Stats
HP: 12, Attack: 5, Defense: 1
Tattle: These are the Hammer Bros. You've seen these punks before, haven't you? Be careful of that hammer! If it hits you, you'll get shrunk in a wink. When the Hammer Bros. get desperate, they'll hurl a ton of hammers, so watch it. These guys have been a pain for ages, so let's give 'em an old-fashioned whopping. As always, they're not to be underestimated.
Paper Mario 2 Stats
Boomerang Brother
HP: 7, Attack: 2, Defense: 1
Fire Brother
HP: 7, Attack: 3, Defense: 1
Hammer Brother
HP: 7, Attack: 4, Defense: 1