I assume that the character is an expo of https://en.wikipedia.org/wiki/Elric_of_Melniboné (https://en.wikipedia.org/wiki/Elric_of_Melnibon%C3%A9)
I think that URL is iffy, but yes. Hawkwind did a concept album about Elric which sparked my interest. Ultima 7 also had a black sword which fed on people's life force. And a seer called Hawkwind in some of the earlier games.
Surely a coincidence...
EDIT: Thinking about it, I was reading the Elric stories a lot while the Johan Cross era was being written...