Haunter

Haunter is a Ghost/Poison-type Pokémon known for its gaseous, floating form and mischievous nature. It has a purple, ethereal body with disembodied hands and a wide, menacing grin. Haunter is known to lurk in the shadows, using its ability to phase through walls to surprise and scare its targets. It can hypnotize and drain the life force of its victims, making it a formidable opponent in battle.