Mask

In The Legend of Zelda series, there are many masks. The masks started in Ocarina of Time with the Happy Mask Shop. In Majora's Mask, the masks were one of the main gameplay features. They have made various, minor appearances in other games as well (Oracle of Ages, The Wind Waker, Twilight Princess).

Ocarina of Time

 * Bunny Hood
 * Gerudo Mask
 * Goron Mask
 * Keaton Mask
 * Mask of Truth
 * Skull Mask
 * Spooky Mask
 * Zora Mask

Majora's Mask

 * All-Night Mask
 * Blast Mask
 * Bremen Mask
 * Bunny Hood
 * Captain's Hat
 * Circus Leader's Mask
 * Couple's Mask
 * Deku Mask
 * Don Gero's Mask
 * Fierce Deity's Mask
 * Garo's Mask
 * Great Fairy Mask
 * Giant's Mask
 * Gibdo Mask
 * Goron Mask
 * Kafei's Mask
 * Kamaro Mask
 * Keaton Mask
 * Mask of Scents
 * Mask of Truth
 * Postman's Hat
 * Romani Mask
 * Stone Mask
 * Zora Mask
 * Majora's Mask

Oracle of Ages

 * Doggy Mask

The Wind Waker

 * Hero's Charm

Twilight Princess

 * Hawkeye
 * Fused Shadow