Niko

Niko is the lowest ranked member of Tetra's crew of pirates. He appears in three games: The Legend of Zelda: The Wind Waker, The Legend of Zelda: Phantom Hourglass, and The Legend of Zelda: Spirit Tracks. Due to this, he is one of the only non-magical characters to have met multiple incarnations of Link within one lifetime. In the first two games, he is at a vague young age, and in the last one, he is an old man.

Niko wears a red and white-striped shirt, a dark green pair of pants, and a skull belt. While young, he also wears a blue beanie. In The Legend of Zelda: Spirit Tracks, Niko is an old man who somewhat retains his appearance, except he is holding a cane and has some white hair (instead of greenish-blonde like in his previous appearances).

The Legend of Zelda: The Wind Waker
In The Legend of Zelda: The Wind Waker, Niko is the lowest-ranking of the main pirates, and as such must do all the work below deck. When Link temporarily joins, he is very happy to finally have a "swabbie" to boss around. He has Link go through an obstacle course below deck to prove his mettle, which teaches him how to swing on ropes. The reward for completing this is the Spoils Bag. Once Link does so, he is called back to the deck, so Niko cannot put him to any actual work.

Later, after the pirates raid Bomb-Master Cannon's shop, Niko is left to guard the ship while the others party on Windfall Island. He is behind the hold's locked door, only letting in those who know the password, "schooner." When Link gets through, Niko assumed he returned because he missed being his "swabbie." He has him go through a similar obstacle course for the bombs, which now requires the grappling hook due to lacking hanging ropes.

The Legend of Zelda: Four Swords Adventures
In The Legend of Zelda: Four Swords Adventures, Niko appears with the other pirates in the Japan- and Korean-exclusive Navi Trackers mode.

The Legend of Zelda: Phantom Hourglass
In The Legend of Zelda: Phantom Hourglass, Niko only appears in the prologue and epilogue, now apparently working on-deck. He has taken up a hobby of cutout-based presentations, as he does one pertaining to the story of The Wind Waker. Link, however, had fallen asleep to it. Tetra yells at the two to get back to work, as they are searching for the Ghost Ship. When it appears, Niko becomes frozen in terror, while Tetra boards and Link unsuccessfully tries to do the same.

At the end of the game, Niko and Mako call out to the two when they awaken on the Ghost Ship's deck. Niko asks Tetra if there was any treasure, and she begins berating him over not coming to her rescue after she had been frozen for so long because of it. The other pirates are confused due to it only being 10 minutes in their world, but by the time she points back to the Ghost Ship, it has vanished, leading Niko to exclaim that it really is cursed. At the end of the game, Tetra is still scolding Niko and arguing with Gonzo.

The Legend of Zelda: Spirit Tracks
In The Legend of Zelda: Spirit Tracks, Niko is an old man living in Aboda Village in a house with a decorative mast on the roof. He keeps a photo of himself in his youth. He still makes presentations, though his art style has changed drastically. At the beginning, he shows Link his "blasted masterpiece" (or "blasterpiece"), a presentation on the war between the Demon King and the spirits of good, which he titles Spirits and Demons...at War! He only shows it to the public once per year, but the current incarnation of Link, who is his roommate, sees them for free at their house. Once again, however, Link sleeps through them, to Niko's chagrin.

Later, when Link is dressing as a guard, Niko notes his resemblance to his old friend. Once Link brings Alfonzo back to the village, Niko gives him a Stamp Book, requesting he collect stamps from places all around the world. He tells him he could not do so when he traveled before due to lacking a book at the time. When Link shows him stamps, Niko gives him rewards. When Link shows him ten stamps, he gives him the Shield of Antiquity, the previous Link's shield.

Once Link has completed the Fire Temple, Niko sends him a letter with a treasure map of Aboda Village he found while cleaning. He also apparently showed his "masterpiece" to the Postman, who considered it an earful.

Hyrule Warriors Legends
In Hyrule Warriors Legends, Tetra's standard outfit has an unlockable recolor based on Niko's outfit. In the Master Wind Waker Pack DLC, Toon Link also has an unlockable Niko recolor of his Hero's Clothes. Both outfit recolors are included in Hyrule Warriors: Definitive Edition.