Did this for a fun possibility as they look pretty close in the face.
Does seem to be using a similar helmet like the movie Thulsa, and in Marvel, this character is allied with Thulsa Doom, both are also immortal going back to the time of Kull.
Maybe Doom summoned the evil Spirits, while Akiro summoned Crom's spirit? Or Akiro summoned Wraal?
Another thing I find interesting, is the "Well of Souls" used in Indiana Jones and this demons name is Devourer of Souls
here..perhaps coincidence or just another reference between the films...