Chimecho is a small, round Pokémon with a mainly bluish-white body shaped like a fūrin wind chime. It has beady, yellow eyes and three stubby limbs. Its body has a horizontal amaranth-colored pattern. Underneath its body extends a long, tag-like tail that has amaranth patterning at the bottom. A yellow, globular growth, referred to as a suction cup or a sucker, is connected to the top of its body.

Chimecho can create ultrasonic sound waves and other noises. It uses seven different echoing cries to communicate with others. It is nocturnal and usually lives in grasslands and woods, but some are found in mountainous regions. It eats Berries that it plucks with its tail.