Twinmold

Giant Masked Insect: Twinmold is the fourth boss in Majora's Mask. This foe presents something of a challenge for Link, as it is not the size of an ordinary boss. Twinmold is also split into two equally powerful worms that protrude from and dive into the sand randomly. The Giant's Mask that was previously obtained in Stone Tower Temple relies on the magic meter, but augments Link's size, therefore allowing him to fight Twinmold more easily.

The weak points of the twin monsters are the heads and tails. Whenever Twinmold dives into the sand or starts to arise from it, the head and tail of either of the worms will be vulnerable to sword strikes. The battle consists of simply slashing at Twinmold's weak points until both are dead. One worm will fall before the other, so once one of the two has fallen, Link can focus his attention on the remaining twin.

As Fierce Deity Link

Main article: Fierce Deity Link

Twinmold is probably the most painstaking of the bosses to defeat using the Fierce Deity's Mask. Since the Giant's Mask was the intended instrument of its destruction, remaining relatively the same size won't exactly make the battle easy. Because Link is not huge, Twinmold will pose a much greater threat as it is perhaps the largest Zelda boss in history. The tails and heads of the worms are still their weaknesses, though the limited range of the sword beams and the incredible speed of the two worms will make it frustrating to actually get up close and strike the tails and heads. Sword beams won't be very effective here. It's easier to just allow the worms to tunnel into the sand. The tails will only be in Link's target range for a split second, so it's important for the player to take the initiative and strike swiftly. After battling Twinmold as Fierce Deity Link, players likely won't want to do it again.