Pokémon Generations by Pokémon

[SchAlternate]

Wait, what's the difference between Legendary and Mythical?

Mythical Pokemon are Legendaries that aren't available at all in any of the games without a special event (except Deoxys in ORAS). Usually Pokemon that are given to you via an online/hidden event (like Jirachi) or requires you to access a hidden area which is normally not accessible without an event (like Darkrai in Newmoon Island). Basically any Pokemon that you don't need to catch for the game to think you've fully completed the Pokedex.