Gengar (Mystery Dungeon)

Gengar is a character and a main antagonist in Pokemon Mystery Dungeon Red Rescue Team.

Backround:(contains spoilers)
Gengar appeared with (his?) Reescue Team Mates Ekans and Medicham and steals Starter/Human and Partner's mail, and also tries to best the team.

He tells everyone that Starter is the Cursed Human.

After Starter was vindicated, he suddenly asked Starter and Partner to help him travel. When they reach the place,       it is shown he is the Cursed Human.

Personality:
A very, very evil creature in the start, but he eventually realizes what worng he has done,

and begins to change.