“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 the Bros. with Hammers and Hammer upgrades. Mario and Luigi first encounter them in Hoohoo Village, where their progress is impeded by a large rock dropped by Fawful. Mario and Luigi have to supply them with Hoohoo Blocks to create Hammers. Just before the Mario Bros. enter the Beanbean Overworld, the Hammerhead Bros. arrive just in time to teach them how to use Hammer attacks in battle.
Later, the Mario Bros.' progress is once again impeded by a gray colored rock leading to Teehee Valley. The Mario Bros. are out of options, but after some exploring, they find the Hammerhead Bros.' new home. The Hammerhead Bros. gladly offer to help them and upgrade their Hammers to Super Hammers. Later, when they need to traverse the Oho Ocean, the Mario Bros. return to upgrade their Super Hammers to Ultra Hammers to break the dark rock blocking access to the eastern sea.
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