Amazing Flyin' Hammer Brother

The Amazing Flyin' Hammer Brother (alternatively spelled as Amazing Flying Hammer Brother, and also shortened to A. F. H. Bro in the in-game glossary for Super Princess Peach) is a special variety of Hammer Bro that first appears in Super Mario World.

Super Mario World / Super Mario World: Super Mario Advance 2
In Super Mario World, Amazing Flyin' Hammer Brothers are first encountered in Donut Plains 4. They hover around on a two-block version of the Flying Platform that swings back and forth. Amazing Flyin' Hammer Brothers attack by tossing hammers from their swooping platform, and can be defeated by various methods, most commonly hitting the platform from below; they can also be defeated with a stomp or fireball, though the hammers make it somewhat difficult to do so without taking damage. When the Amazing Flyin' Hammer Brother is defeated, the platform remains on-screen and continues on its original flight path; however, if the platform's rider is somehow defeated before the platform itself begins to move, it instead stays in place.

During the enemy cast roll in the game's credits, the Amazing Flyin' Hammer Brother's platform resembles gray Empty Blocks instead of gray Rotating Blocks.

Super Mario Advance 4: Super Mario Bros. 3
In Super Mario Advance 4: Super Mario Bros. 3, a lone Amazing Flyin' Hammer Brother appears near the beginning of the World-e level Slip Slidin' Away. It retains its appearance and behavior from Super Mario World.

Super Mario-kun
A singular Amazing Flyin' Hammer Bro appears in the first volume of Super Mario-kun, in chapters 10 and 11. He is a hammer smithy and works with his flying platform's sentient blocks and reveals to them that he made a plan to defeat Mario, Luigi, and Yoshi: he created a lot of little hammers and one big hammer. The Hammer Bro, riding his platform, attacks the trio by tossing the big hammer, from whose head come out the little hammers, who pound the three protagonists and trap them into the big hammer's head. Taking the big hammer, the Amazing Flyin' Hammer Bro instructs the platform to take them to Bowser's Castle, but the two blocks, which cannot take the weight that they are carrying, throw away both the Hammer Bro and the big hammer, which releases the prisoner. Angry, the Hammer Bro has a brawl with the blocks, but Mario tries to stop them ("You're friends, you shouldn't be fighting.") and when the three turn around to shut him up, they realize Mario and his friends are free and proceed to attack him. Amazing Flying Hammer Bro, then, throws a flying hammer homing onto Mario and pounds him into a block. Wanting to take advantage of the block as a defense, Mario tries to attack the Hammer Bro with the help of a spring, but the Hammer Bro attacks him with the little hammers, destroying his block-armor, inside of which Mario finds a Dragon Coin which Yoshi eats, transforming into Shield Yoshi. With the cape back, Mario grabs Shield Yoshi and tries again to attack the Hammer Bro, protecting himself with Yoshi. The Amazing Flyin' Hammer Bro then tries to stop Mario with the big hammer as a last resort but ends up being stuck in Yoshi's mouth, allowing Mario to punch the Hammer Bro, defeating him.

In the very next chapter, the Amazing Flyin' Hammer Bro returns to Bowser's Castle, where he gets brutally punished by Bowser for his failure. Later, when Bowser tries to prove to Peach that he is strong by ordering Kamek to turn him into a block so that the minions can attack him and he can show he can withstand the pounding, the Amazing Flyin' Hammer Bro joins the pounding shouting "Revenge time".

Dinosaur Dilemma
One Amazing Flyin' Hammer Brother appears in the Nintendo Adventure Book Dinosaur Dilemma, capturing the remaining dinosaurs in Dinosaur Island while they, Mario and Yoshi are looking for food near Lake Trilobite. The Amazing Flyin' Hammer Brother threatens to capture Yoshi as well, but is scared off by Mario.

Super Princess Peach
Amazing Flyin' Hammer Brothers make a reappearance in Super Princess Peach, retaining their appearance and behavior from previous games. They only appear in Giddy Sky. The game also introduces a sleeping "Calm" variant called a C. A. F. H. Bro, which is comparatively more common. Strangely, Peach can instantly defeat the enemy by simply touching it if it is close enough to the ground.

Nintendo Monopoly
On the board of the original version of Nintendo Monopoly, an Amazing Flyin' Hammer Brother can be seen in a Super Mario World screenshot.

Paper Mario: The Origami King
While Amazing Flyin' Hammer Brothers do not physically appear in Paper Mario: The Origami King, one is seen in for Folded Soldiers.