So since I was a kid I have been a huge mark for dark gimmicks.
From what I recall Kevin Sullivan's Army of Darkness was the first of these I can recall
Members at one point or another included:
Kevin Sullivan, Oliver Humperdink, Billy Graham, Mark Lewin (Purple Haze), Bob Roop (Zodiac), Luna Vachon, Locke (former WWF female wrestler Wenona Littleheart), Nancy Sullivan (Fallen Angel), and Mike Davis.
Obviously the Undertaker is the GOAT dark gimmick of all time, but I wanted to see if anyone knew of something that predated that Florida run of Sullivan?
I know NWA Mid America used a Mummy character with Lawler in the mid 70's, and a Frankenstein character, but both were just silly, not really dark.