Hammer Bro

The Hammer Bro (, Hammer Bros.), or Hammer Brother, are enemies from the  series.

Origin
Hammer Bros. made their debut in Super Mario Bros. as a common enemy, and has become a common enemy in later Mario games. They are Koopa Troopas with larger shells and helmets. They attack by throwing hammers at the player while jumping between surrounding platforms. Variants of Hammer Bros. include the, , and.

As an Assist Trophy and in The Subspace Emissary
The Hammer Bro debuted in Super Smash Bros. Brawl as an Assist Trophy and an enemy in The Subspace Emissary.

As an Assist Trophy, when the Hammer Bro is summoned, they remain stationary in the area where they are summoned and attack by throwing hammers at the opponents. They occasionally jump, which can give their thrown hammers extra distance.

As an enemy in The Subspace Emissary, the Hammer Bro functions similarly as an Assist Trophy. They remain in one area, throw hammers at the players, and jump between platforms occasionally.

Trophy
The Hammer Bro trophy can be obtained by using the Trophy Stand on the Hammer Bro in The Subspace Emissary.

As a background character
The Hammer Bros. appears as a background character in the Super Mario Maker stage riding a Lakitu cloud. Their appearance changes depending on the game style, matching their designs in Super Mario Bros., Super Mario Bros. 3, Super Mario World, and New Super Mario Bros. U.

As an Assist Trophy and in Smash Run
The Hammer Bros. return as an Assist Trophy and an enemy in Smash Run, reprising their behavior in Brawl.

As an Assist Trophy, like most of the on-stage Assist Trophies that are invulnerable to attack, the Hammer Bros. can be attacked and KO'd. When they are KO'd, they act as they do in Super Mario Bros., falling through the stage while upside down.

Trophy
The Hammer Bro trophy appears in both versions. In, it is part of the Bowser's Minions.

As an Assist Trophy
The Hammer Bro return as an Assist Trophy, reprising their behavior in Brawl and Super Smash Bros. 4.

The Hammer Bro Assist Trophy can be attacked and KO'd, which earns the player an extra point. Training Mode describes their Assist Trophy: ''Throws hammers. Lots and lots of hammers.'' They cannot be summoned on the Mute City SNES stage.

Spirit
Hammer Bro also appears as an Advance-class support spirit.

Hammer Bro uses a puppet fighter and is fought on the Golden Plains stage's Battlefield form. During the battle, the Hammer Bro appears as a hostile Assist Trophy when Yoshi reaches high damage.

Trivia

 * The Hammer Bro trophy is the only Assist Trophy that can only be obtained by using a Trophy Stand on it, due to its appearance in The Subspace Emissary. It is also the only Assist Trophy to appear in The Subspace Emissary.
 * Despite Hammer Bros (and their variants) having voices in various Mario spin-off games (provided by Motoki Takagi), they are completely mute in Smash as an Assist Trophy.
 * Hammer Bro's artwork pose in New Super Mario Bros. U resembles its artwork pose in Brawl (albeit with its mouth closed).