In my opinion, Ghost Rider had lots of awesome enemies during the 90s, but during the 70s, not so much...
But there was Centurious, the Soulless Man. Though, this custom is based on his appearance in the 90s...
I used the TNA figure Monty Brown as a base and the head of a movie Hulk figure. I didn't think at the time that the head was too big, but now I wish I would have used another head. And another body! :)
Still, it turned out okay.
The hair is from Elektra, the skirt-thing from Maestro Hulk and the shoulder pads were cut from F4 Movie Doctor Doom's dress.