Tapu Koko is a Electric/Fairy Pokémon.
Tapu Koko first appears in the skies above Hau'oli City. Upon appearing, he attacks Sun and Moon with a variety of electric attacks. Sun has Dollar and En battle, and, though Tapu Koko has superior strength, Tapu Koko suddenly flees, leaving behind a Sparkling Stone. Sun comments that Tapu Koko probably just wanted to play, but later Hala worries that it and the other Guardians are growing angry.