Tapu Koko TF

The user finds the two halves of Tapu Koko’s mask on Melemele island. If they put the halves on their arms, they transform into Talu Koko Tapu Koko is a vaguely rooster-like Legendary Pokémon. Tapu Koko's head and torso are black with white markings on its chest, just above its eyes, and on top of its head. Extending from the top of its head is a large, orange plume with bristles along the back. There is a yellow marking covering the top bristle and half of the bristle below it. The bottom of this crest goes all the way to its neck, where it divides its face in half and creates a beak-like nose. It has small, blue eyes with yellow markings behind them. The lower half of its body is orange with four pointed projections: one short spine on the front and two short spines in the back, with one longer spine between them. These spines resemble a bird's tail feathers. Its thin arms have round, yellow structures encircling its shoulders. On each arm is a shell that appears to be half of a bird mask, and its hands end in two large claws to create a beak for the mask.

The mask itself is mostly yellow with black, orange, and white markings. There are three white triangular markings with black edges on the top of each half of the mask, which create diamond shapes when the mask is closed. The 'eyes' consist of a white diamond connected to a slightly larger orange diamond, which is inside a larger yellow diamond. Each of these shapes is edged in black. On each half of its beak is an orange triangle with a white rim. There are wing-shaped structures on each side, toward the back. Tapu Koko is able to pull the mask together and hide its upper body inside, creating the impression of a stylized rooster.

This Pokémon is called the guardian deity of Melemele Island. It's known for protecting its home, but it is fickle and will not necessarily help people in need. However, it is very curious and may come to play or battle with people or Pokémon that interest it. It is able to store electricity by closing itself inside the shells on its arms. It does this by summoning thunderclouds. It has an explosive temper, but it instantly forgets what enraged it in the first place. Due to this, Tapu Koko has been referred to as a malevolent deity should it get provoked. It can move lightning-fast in order to confuse enemies that fight it. Tapu Koko is known to defend its home from the Ultra Beasts. As seen in Revealing the Stuff of Legend!, Tapu Koko and the other tapu can transform a Z-Ring into a Z-Power Ring. Furthermore, in Battling the Beast Within!, it was shown to have the ability to transport others into Ultra Space when working together with another Tapu Koko.