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.
http://www.marvunapp.com/Appendix/devors.htm
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...