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Prismantus is the boss of the Grim Temple in Tri Force Heroes. It is similar to the boss Margoma, but has three, colored light bulbs at its sides.


Prismantus will spin wildly after the Links. It will periodically stop to seek its next target while spinning in place. The colored light bulbs at its sides are its weak points during this stage, and can only be damaged by the Link whose tunic corresponds with the bulb's color. As its body is constantly spinning, the Links must carefully time their attacks to strike the right bulb. After a bulb takes enough damage, it will shut off. After all of its bulbs are shut off, Prismantus will be stunned and its spinning halts. The Links can then form a Totem to throw one Link up to its eye and strike it. It is also possible to hit its eye by standing close to it with two Links stacked on top of each other. Its colored lights will eventually come back on.

In the second phase, Prismantus turns to its side and starts rolling around the room. It will eventually stop momentarily, allowing the Links to easily strike its light bulbs. Shutting them all off stuns Prismantus again. In the third phase, Prismantus stands up and charges a powerful beam. It will fire this beam around the room, before continuing to roll again and stopping only to fire another beam. The Links must again strike its light bulbs to stun it, although this time the Links must form a Totem of three to strike its upper bulbs while it fires a beam. It will be defeated after several more hits.


Prismantus's Japanese name is onomatopoeia of the booming noise it makes when it moves.[1] This was the original Japanese name of Gigaleon, but was changed as it fitted Prismantus better.[2]

Prismantus also had several Japanese names during developement, including Yの字君 (Y Guy) and Cyclops.[3]

TMC Forest Minish Artwork.png Names in Other Regions TMC Jabber Nut Sprite.png
Language Name Meaning
United Kingdom of Great Britain and Northern Ireland United Kingdom of Great Britain and Northern Ireland EnglishUK Primantus
Japan Japanese ダムダム (Damu Damu) Dum-Dum
French Republic FrenchEU Doumdoum
Federal Republic of Germany German Dumdum
Italian Republic Italian Tri Trottola
Kingdom of Spain SpanishEU Dumdum
Community of Latin American and Caribbean States SpanishLA Dumdum


  1. "[...]but then we realised that the "Cyclops" also makes a booming noise when it moves, and we thought that the name "Dum-Dum" would probably fit it better." —Mikiharu Oiwa (Tri Force Heroes Miiting part 2)
  2. "It's the mid-boss of the Sky Realm, which is called "Gigaleon" in the retail version. We originally called it "Dum-Dum" because of the sounds it makes when it shoots projectiles" —Mikiharu Oiwa (Tri Force Heroes Miiting part 2)
  3. "Anyway, we created the boss of The Ruins next, and I initially went completely literal and just nicknamed him the "Y guy". But then again, that really doesn't sound like a proper name, does it? Next I thought about borrowing the name of the one-eyed Greek monster, Cyclops, but it seemed too long and I was worried that people would call it "Cyplos" or something instead..." —Mikiharu Oiwa (Tri Force Heroes Miiting part 2)
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