Legendary Pokémon are extremely powerful and rare Pokémon that all play a major role in the Pokémon universe.
Generation 1: Mewtwo, Mew, Articuno, Moltres, Zapdos
Generation 2: Suicune, Entei, Raikou, Ho-oh, Lugia, Celebi
Generation 3: Regirock, Regice, Registeel, Rayquaza, Groudon, Kyogre, Latias, Latios, Jirachi and Deoxys
Generation 4: Arceus, Palkia, Dialga, Darkrai, Giratina, Cresselia, Shaymin, Uxie, Azelf, Mesprit, Heatran, Regigigas, Manaphy and possibly Phione