Helmethead (ジャーマフェンサー Jāmafensā?, Jama Fencer) is the boss of the Midoro Palace, the second dungeon in Zelda II: The Adventure of Link. Helmethead wields a sword and shield, yet he does not use them and is similar to both an Iron Knuckle and a Doomknocker. Helmethead attacks by shooting fireballs out of one of his two helmets or eye, depending on what is upon his torso. His weak point is his head: eventually, the two helmets can be knocked off his shoulders, at which point they begin floating around the air, shooting fireballs at Link. At that time, Helmethead will show his real head. In the Playing with Power guide and the official Nintendo Power Guide for the game, he was given the name Jermafenser, with his two helmets being mentioned to be "haunted" in the latter source.
In the Famicom Disk System version for the game, he also acted as the boss for Ocean Palace. The strategy was otherwise similar to the one at Midoro Palace, although he had a separate helmet (as originally, you only fought him with one helmet each).
The name "Helmethead" was bestowed upon this character due to the many helmets he wears and subsequently uses as weapons against Link.
In Breath of the Wild, there is a bridge called Helmhead Bridge which may be a reference to Helmethead which fits with other bridges named after bosses such as Gleeok Bridge, Manhala Bridge, and Carok Bridge.
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