User blog comment:Ultimatrixherodebut/Could Khyber be a Detrovite (Vulkanus' species) ??????????/@comment-3513331-20120426021525

DJW says that he prefers for Vulcanus to be the only 'dwarf' Detrovite, even though its a canon confirmation that they are all that small. So seeing as he's a big contributer to this series I don't think he would let the main villain slip past his approval.