Haunter is a Ghost/Poison-type Pokémon introduced in Generation I that evolves from Gastly at level 25. It features a gaseous form with disembodied hands that float ominously before it, embodying an eerie charm. With its purple hue and mischievous grin, Haunter hides away from light and lurks in dark corners like caves. The Pokémon possesses the Levitate ability, which grants immunity against Ground-type moves. Haunter can further evolve into Gengar through trading with another player, a transformation that enhances its battle capabilities significantly and gives it a more solid appearance while embracing shadows even more boldly.