You hit the nail on the head. Sullen eyes, wide cheek bones, thin lips...with slightly longer hair than regular He-man.
I'd say between Vikor and Vykron as if they are brother from the same parents.
He is Conan lite: the most unfriendly He-Man in more primitive and wild world, a grim protectorate of a Savage Eternia. I'd argue that he is slightly more massive then say Filmation He-Man, thus a little more muscular then the average MOTUClassic buck. Fisto's right arm couldbe hypothetical re-used from this imaginary figure.
Are you aware that the mini comics are posted on he-man.org?
good resolution and an excellent resource for reference materials