→Shiny backgrounds in Pokémon Bank
* Mythical: Mew, Celebi, Jirachi, Deoxys, Manaphy, Darkrai, Shaymin, Arceus, Victini, Keldeo, Meloetta, Genesect, Diancie, Hoopa, Volcanion, Magearna.
What's notable here is that the Legendary are all Special Pokémon, but Mewtwo is the only Special Pokémon without a shiny background. Of the Mythicals, Phione doesn't have the shiny background, and I don't have a Marshadow to check. I'm not sure how this affects the definition of Special Pokémon, Legendaries, and Mythicals, but it's interesting that they singled out these Pokémon from the rest.