Hakuryuu - Ditto

Ditto

Ditto (メタモン?, Metamon) has the form of an amorphous blob with a simplistic face. Ditto is pink and is able to rearrange its cellular structure into anything at will, but it usually changes into any nearby Pokémon. It takes on the exact form of the Pokémon and can use all of its abilities. The only things that can make it change back are being defeated, returning to a Pokéball, and the Ditto laughing. During the night, it transforms into a rock to avoid being attacked. If it tries to transform from memory, or if it is inexperienced, it will likely mess up on certain details such as leaving its own face or staying its own size. The only other Pokémon capable of transforming is the legendary Pokémon Mew (though Ditto is the only non-legendary Pokémon to learn Transform). Pokémon: The Electric Tale of Pikachu manga author Toshihiro Ono cited Ditto as one of his favorite characters to draw for the series, describing it as "easy to draw".