Muiranthias is an island located in the Nemesis Triangle, an unknown place where planes and ships would get lost.

This island was inhabited by Malikayas, who built the Serpent's Temple, where the volcanic god-like monster Maligore, was trapped by ancient wizards, ascendants of Lerigot, an alien wizard from Liaria. The island was visited by Divatox and her crew who attempted to free Maligore, and the Turbo Rangers who arrived to stop her. The island also saw the first transformation of the Turbo Zords into the Turbo Megazord.

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