Niko

From Zelda Wiki.org

In The Wind Waker, Niko is the skivvy and generally the lowest-ranking crew member on board Tetra's pirate ship. Niko enthusiastically befriends Link when he is reluctantly cast below the decks for a journey to the Forsaken Fortress; as with Link's presence, Niko himself no longer had the worst repute on board. Niko's apparently notorious incompetence leads him to be outwitted by Link on several occasions and has him hand over multiple important treasures to the hero as rewards for completing his challenges-notably a Bomb Bag.

In Phantom Hourglass, Niko recounts the events of The Wind Waker before the Ghost Ship appears, but only appears during the opening and closing sequences of the game.

His Nintendo Gallery figurine description reads:
Niko
Personality: Merry
Least Favorite Thing: Gonzo's underwear
"Niko is the bottom rung on the pirate ladder, so he's responsible for all the odd jobs on the ship. He's quite childish and rarely thinks of the consequences of his actions. Even so, he shows signs of having what it takes to move up the pirate ladder."