Wailord

Wailord is one of the types of fictional Pokémon species. They first appeared in the Generation III video games, where you (being the hero), could add them to your PokéDex after you evolve Wailmer. They are noted as being the largest (iin size) Pokémon in the series, being as high as 47 feet and 7 inches. However, they are oddly only the sixth heaviest Pokémon despite being the largest. It has been speculated that the cause of this is because the species resembles a blimp, which are light in terms of weight.