Giant's Mask

The Giant's Mask is one of the masks found in Majora's Mask. This mask is found in Stone Tower Temple, and it can only be used in the fight against Twinmold, the major boss of Stone Tower Temple. When equiped, Link becomes a giant. Wearing this mask gradually drains your magic.

It is possible to put on the Giant's Mask elsewhere, using the same glitch used to wear the Fierce Deity Mask. However, Link will simply yell as if he's transforming, and the game will lock up.