Masks in Majora's Mask

"Your true face... What kind of... face is it? I wonder... The face under the mask... Is that... your true face?"

- Child wearing Twinmold's mask

Masks are a central plot element in The Legend of Zelda: Majora's Mask. There are 25 masks which play a role in the story of Majora's Mask, 24 of which are obtainable and usable by the player.

Quest Purpose
Each of the masks is used to give Link a kind of ability, some more drastic than others. The Deku, Goron, and Zora masks each change Link's form into one of these Hylian/Terminian species, with the Fierce Deity's Mask being a fourth transformation mask that seemingly enhances his Hylian form, albeit altering his appearance noticeably. The remaining 20 obtainable masks have less significant effects, having a range of abilities. Some are only necessary for sidequests and are not required to complete the game. The 25th plot-related mask is the titular Majora's Mask, which the player cannot obtain or use.

Trivia

 * Majora's Mask has the most obtainable masks of any Zelda game at 24.
 * The 5 Animal masks (2nd row) are a possible reference to the characters of Star Fox: Fox McCloud, Falco Lombardi, Peppy Hare, Slippy Toad and Pigma Dengar.
 * Some believe the Deku Mask to contain the spirit of the Deku Butler's son, the Withered Tree near the beginning of the game; this is evidenced by his crying over a Deku figure during the end of the game, and the fact that both the Goron and Zora masks come from deceased members of their species.