Haunter is a purple Pokémon with a gaseous body. It has a round head with a pair of disembodied hands. Each hand has three pointed fingers. Its head is flanked by three large, spiked protrusions on either side, and its eyes are large and triangular with small pupils. The gases composing its head curve down to form several pointed teeth framing a pink mouth and a long tongue. Its body tapers into a jagged tail. Haunter hides in very dark places, where it plots to take the life of the next living thing that comes near it. Haunter lives in dark, abandoned caves.