[Edit] Alternate version
Gengar, the Shadow Pokémon. Gengar hides in the shadows. If a Gengar is nearby, it is said to feel ten degrees colder than normal.
– Dawn’s Pokedex
I don’t have a Gengar on my team yet, but I think I want to raise one one day, because it has pretty good stats (good Speed and Sp Attack, but no defense, making it a glass-cannon specialist). Its type combination plus the Levitate ability is pretty good too, being weak to only Ghost Psychic and Dark, not very common types. Plus, it can learn some useful attacks of different types, like Psychic, Thunderbolt, and Energy Ball etc