Red: Under a full moon, this POKéMON likes to mimic the shadows of people and laugh at their fright.Yellow: A GENGAR is close by if you feel a sudden chill. It may be trying to lay a curse on you.Gold: It steals heat from its surround ings. If you feel a sudden chill, it is certain that a GENGAR appeared.
Prof. Lotus' Notes: Shiny Mega Gengar is white. In Lavender Town, you meet a girl standing outside the haunted tower who asks you 'Do you believe in Ghosts?' then says 'Hahaha, I guess not. That white hand on your shoulder... it's not real'. If you look at Gengar's design, those hands... *Spooky*