Grimer is a slimy, amorphous Pokémon, born from sludge in dirty streams or seabeds that are exposed to lunar radiation. It has two large eyes with beady pupils and a gaping mouth with a gray tongue. While it lacks any visible legs, it does have two arms with three digits on each hand. Its purple sludge body contains a variety of pungent bacteria, which are so potent that it renders soil barren and incapable of supporting plant life. It is constantly oozing a bacteria-rich fluid from all parts of its body. Should it run out of internal germs, Grimer will die. Pieces of it often break off during travel and go on to become new Grimer. When combined with another Grimer, it produces new poisonous compounds. (Source: Bulbagarden.net, CC BY-NC-SA)