Gengar 
If you feel a sudden chill in the dark, there might be a Gengar nearby waiting to cause trouble. A ghost and poison type Pokémon, Gengar enjoys pulling clever pranks and casting curses on unaware passersby. Gengar is even known to hide in people's shadows! But as mischievous as Gengar can get, it stays loyal to a trainer who treats it well.
Appeared In
Pokémon Red & Blue Time Lapse With Commentary
Description
Artwork by Chris Szczesiul
Music by The Orichalcon | Available at ocremix.org
See the full artwork on Deviantart
Trophy description adapted from submissions by Skyler Hallas, The Yun-Kinator, Marko Seve