Pokemon HeartGold Version Limited Collector's Edition Legendary Ho-Oh Figurine
Ho-Oh is a legendary Pokémon that  is called the Rainbow Pokémon due to its various associations with rainbows. Its feathers constantly change through the rainbow's spectrum of colors as light hits them from different angles. These leave a rainbow trail as it flies continuously through the world's skies, though it is said to live at the foot of a rainbow.