Deku Butler's Son
The Deku Butler's Son is a character that is referenced in Majora's Mask. During the Deku Butler's mini-game, the Deku Butler mentions that Link reminds him of his son. If Link completes the mini-game and is awarded with the Mask of Scents, Link is also rewarded with a special cutscene prior to the game's credits. This special scene features the Deku Butler sobbing at the foot of the Deku-like tree, seen near the beginning of the game, at which time Tatl remarked that the tree seems to have a look of pain. With this evidence, it is strongly believed that the tree is the remains of the Deku Butler's Son after the Skull Kid turned him into the Deku Mask that Link wears when he gets cursed.