The Deku Nut (デクの
Deku Nuts first appeared in The Legend of Zelda: Ocarina of Time and its direct sequel Majora's Mask. Deku Nuts take the appearance of ordinary nuts except they are filled with a special substance that can stun an individual if the nut is damaged. Deku Nuts can be found mainly around the Kokiri Forest region. Deku Babas also emit Deku Nuts when they are defeated. Link can use the Deku Nuts to stun certain enemies in the game. Impa and Sheik also use a Deku Nut, or an item similar to a Deku Nut, to conceal their departure from a certain area. The Deku Nut also appears in Twilight Princess as a throwable object instead of an item that Link can collect. In Brawl, the Deku Nut is used as a throwing item. If a Deku Nut hits a player, it will explode and launch the player. If the Deku Nut explodes next to a player, it will stun the player. When a Deku Nut is idle for a certain period of time or when the item is held long enough it will explode, which is contrary to how they were in the Zelda games.
 In the Super Smash Bros series
The Deku Nut is a type of explosive item in Super Smash Bros. Brawl. When it explodes by being thrown, attacked, or timed out, any character in its blast range (including the thrower) becomes stunned, making them vulnerable to a free hit.
 Damage on Grounded Opponents
If an opponent is airborne when hit by the Deku Nut, they will take a guaranteed 18% damage, and high knockback, as opposed to being stunned.