Houou "Ho-Oh"

About

Ho-Oh is an avian Pokémon resembling a phoenix and a peacock. Its feathers are predominantly gold and red, with yellow tail-feathers, a white underside, and green feathers at the tip of its wings. Ho-Oh has a green stripe on its neck, a yellow beak, black rings around its red eyes, and a feathered, yellow crest on its head. Ho-Oh's wings are prismatic, causing it to trail a rainbow behind it. It has darkly colored feet and legs with four toes and long talons.

When Ho-Oh flies, its huge wings create bright, colorful rainbows. The rare few who bear witness to Ho-Oh are promised eternal happiness. It is capable of razing its target with a mystical fire of great intensity. In ancient times, the Bell Tower in Ecruteak City and the former Bell Tower in Goldenrod City were both once Ho-Oh's perches. Ho-Oh has the mythical power to resurrect the dead as seen with three unnamed Pokémon. When the Brass Tower was burned down 150 years ago, Ho-Oh descended from the sky, reviving three unnamed Pokémon into the Legendary beasts. It can be summoned at the Bell Tower through one of its feathers, Clear Bells, and the dance of the Kimono Girls.

Ho-Oh has been referred to as the "guardian of the skies".

(Source: Bulbapedia)