Well I have two options for Gengar:
1. Gengar lvl 21
OT: Danny
Gentle nature
moves:
-Mean look
-Curse
-Night Shade
-Confuse ray
(Caught by my husband so i know its legit)
2. Banshi (will be lvl 25)
OT: Kamon
Calm nature
Moves:
-Hypnosis
-Night Shade
-Sucker Punch
-Mean Look
(Banshi is currently a Gastly, Id need a few hours to get it to evolve)
(Caught by me before I restarted my game)
Both are pokemon I can level up if youd like.
But neither one can be nicknamed, I apologize.
Sorry it too so long, I had to look through 4 games to see what I had.