Deku Mask

The Deku Mask is the first mask acquired in Majora's Mask. It is one of several masks that contains the spirit of another being; in this case, a Deku Scrub. Wearing the mask will cause Link to take on the form of the Deku Scrub, and gain new abilities.

The Spirit Within the Mask
During his travels through the inner Clock Tower, Link will run across a tree bearing a resemblance to a Deku Scrub, which Tatl even points out as looking like Link. During the ending credits cutscene, the Deku Butler (who lost his son ) is seen standing near the tree, implying that the tree is his son, most likely killed by Skull Kid, who then used that spirit to transform Link.



Obtaining the Mask
The Deku Mask is a mandatory mask. Link acquires this mask upon learning the Song of Healing from the Happy Mask Salesman. The song causes the Deku spirit residing in Link to be encased within a mask, which then falls as his feet. The Happy Mask Salesman then tells Link to keep the mask as a momento.