The Hammerhead Bros. are two master blacksmiths from Mario & Luigi: Superstar Saga who resemble, forge, and upgrade Hammers. The older brother, Sledge, is red, while his younger brother, Mallet, is green, much like Mario and Luigi. They are first encountered in Hoohoo Village, after Mario and Luigi's path is blocked by a rock dropped by Fawful. Mario and Luigi must supply the Hammerhead Bros. with Hoohoo Blocks to create Hammers, which can then be used to destroy the rock. Before Mario and Luigi enter Beanbean Outskirts, the Hammerhead Bros. arrive to teach them how to use their hammer in battle.
Later, the Hammerhead Bros. are visited in their new homes at Beanbean Outskirts by Mario and Luigi after a stronger rock blocks their path to Teehee Valley. The Hammerhead Bros. gladly upgrade their hammers to Super Hammers. The hammers are upgraded 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, the Hammerhead Bros. reprise their role in the main story. Additionally, before Mario and Luigi go to Teehee Valley, they will appear near the entrance of Beanbean Castle, telling them that they have moved to the caverns of Beanbean Fields.
During Minion Quest: The Search for Bowser, Captain Goomba and his squad encounter the Hammerhead Bros. in the level For the Love of Hammers, where the bros. welcome a pair of Hammer Bros. into their family, and sing a song about their love for Hammers together. Captain Goomba asks the Hammer Bros. to join their squad, but they don't want to leave until they hear that Bowser is in danger. Sledge suggests to have a battle to decide the outcome, with Mallet adding that the loser should do what the winner says. As Captain Goomba emerges victorious, the Hammerhead Bros. say goodbye, while the Hammer Bros. encourage the two that they will be able to make the Ultra Hammer someday. For a parting gift, the Hammerhead Bros. wish to sing the hammer song again. Captain Goomba refuses when asked to hear the song again, which prompts Sledge to tell him how to view cutscenes he has already seen.
Mario & Luigi: Superstar Saga
Mario & Luigi: Superstar Saga + Bowser's Minions
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