Gulpin

Gulpin is a small, green, amorphous Pokémon with a large mouth that takes up most of its body. It has a yellow feather-like structure on its head and a black diamond marking on its back. Known for its insatiable appetite, Gulpin can swallow anything whole, thanks to its highly elastic stomach. It primarily feeds on garbage and waste, using powerful stomach acids to digest its meals. Gulpin is often found in urban areas, cleaning up refuse and debris.