Fire Bro

The Fire Bros. are a rare variety of Hammer Bro. Instead of throwing Hammers like their relatives, Fire Bros. have the unique ability to spit Fireballs. These fireballs move very fast and are very hard to dodge.

Super Mario Bros. 3
Fire Bros. first appeared in Super Mario Bros. 3. In fact, only three appear in the entire game. Two appear in the Desert Land while one appears in the Hand Trap levels of Dark Land. Fire Bros. reappeared in New Super Mario Bros.. However, they are only found in World 8-7, right after the checkpoint.

New Super Mario Bros. Wii
Fire Bros. reappear New Super Mario Bros. Wii having the same attacks from New Super Mario Bros. They appear in World 6-6 in the boat level. Here, they throw Fireballs like Mario and Co., rather than spitting them like they previously did.

Super Mario cartoons
Fire Bros. made two rare appearances in The Adventures of Super Mario Bros. 3, where they retained their status as soldiers in Bowser's army.

In the episode "Reptiles in the Rose Garden" two Fire Bros. and two Boomerang Bros. had been ordered to guard Mario, Luigi, Princess Toadstool and Toad while they were held captive in Castle Koopa's dungeon. However, Princess Toadstool fooled the two pairs into fighting each other so that she and her friends could escape.

In "The Venice Menace", Kootie Pie Koopa briefly used a miniature Fire Bro. as a welding torch, which shot a stream of fire rather than their usual fireballs.

Mario Superstar Baseball
Fire Bro. was made playable for the first time in Mario Superstar Baseball, as a color swap for Hammer Bro., once he's unlocked. He also appeared on Bowser's team in challenge mode. He had a bit less speed than his counterparts, but he used an everyday bat instead of a hammer or boomerang, which is hard to hit with. Starting with this game, the Fire Bro. wears a red helmet and a red shell, similar to what the red-shelled Koopa Troopas wore.

Mario Super Sluggers
The Fire Bro. later appeared in Mario Super Sluggers with the same bat as in Mario Superstar Baseball. His fielding abilities have improved, and he has the best batting abilities among his counterparts.

Paper Mario: The Thousand Year Door
Flare, a Fire Bro., is a fighter in the Glitz Pit alongside Bamma and Hamma Jamma and the only Fire Bro. to appear in Paper Mario: The Thousand-Year Door. Like other Fire Bros. in earlier appearances, he spits fireballs to attack. However, these fireballs not only damage opponents, but may also cause them to catch fire as well.

Super Paper Mario
Fire Bros. make an appearance in the latest of the Paper Mario series, Super Paper Mario. They are encountered in Castle Bleck, and act just as they did in Super Mario Bros. 3.

Some Fire Bros. also have the unique ability to flip between dimensions.

Trivia

 * According to Tippi, Fire Bros. start up the grill with their fire-spitting abilities at a Koopa barbecue.