Gengar

Gengar is a dual-type Ghost/Poison Pokemon. Gengar has the ability to hide perfectly in the shadow of any object, granting it exceptional stealth. However, Gengar's body acts as a heat sink. Its presence cools the temperature of the surrounding area by nearly 5 degrees, because it absorbs the warmth. Gengar can fly, turn intangible, possess people and other Pokémon, create illusions and extend its tongue by several meters. Gengar is very mischievous, and at times, malicious. He tenjoys playing practical jokes and casting curses. Other tricks Gengar have been known to use include: laughing maniacally in the shadows, lighting their red eyes in the darkness, and chanting mysteriously in the distance. Gengar can store anything it steals inside its body. As a dual-type Ghost/Poison Pokemon, it is immune to Normal and Fighting-type moves, but he cannot deal damage to Normal-type with Ghost-type moves. Ground, Ghost, Psychic, and Dark-type moves are super effective against him.