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“Look at that craftsmanship! POW! Now you're playin' with power!”
The Hammerhead Bros. are two master blacksmiths from Mario & Luigi: Superstar Saga who both resemble and forge Hammers. The elder brother, Sledge, is red, while his younger brother, Mallet, is green, much like Mario and Luigi. They provide Mario and Luigi with Hammers and Hammer upgrades. They are first encountered in Hoohoo Village, after Mario and Luigi's path is blocked by a rock dropped by Fawful. Mario and Luigi have to supply the Hammerhead Bros. with Hoohoo Blocks to create Hammers, which can be used to destroy the aforementioned rock. Before Mario and Luigi enter the Beanbean Overworld, the Hammerhead Bros. show up to teach them how to use their hammer in battle.
Later, the Hammerhead Bros. are visited in their new homes by Mario and Luigi after a stronger rock blocks their path to Teehee Valley. The Hammerhead Bros. gladly upgrade their hammers to Super Hammers. They upgrade their hammers once more to Ultra Hammers when Mario and Luigi are blocked by an even stronger rock towards Oho Ocean.
In Mario & Luigi: Superstar Saga + Bowser's Minions, Captain Goomba and his squad encounter the Hammerhead Bros. in the Minion Quest: The Search for Bowser level For the Love of Hammers. They become attached to Hammer Bros. Even singing a song with the Hammer Bros. However, when Captain Goomba want the Hammer Bros., the Hammer Bros. don't want to leave. Sledge then suggest that they should do a battle and Mallet suggesting the loser does what winner says with Sledge saying the "Winner takes all" quote. After Captain Goomba's squad leaves, the Hammerhead Bros. say good-bye, while the Hammer Bros. encourage the Hammerhead Bros. For the parting gift, they were wanting to sing the song again and asks Captain Goomba, he says no, which prompts Sledge to say come back and tells the player how to do it.
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