The so-called "Demon Clan" is not a race, at least not in biological terms. The scientific name prepared by Spirit Beast Mountain for the Demon Clan is "Demonized Individual." For instance, the Barbaric Lion Demon, biologically speaking, should be correctly referred to as "Felidae Panthera species Lion kind Barbaric Lion subspecies Demonized Individual."
As for the designation "Demon Clan," it more often pertains to a cultural identification. Archaeological evidence suggests that the Demon Clan once had a civilization that briefly flourished. However, in the era dominated by the Human Clan, practically nothing remained of the Demon Clan's culture, and their language was basically reduced to roars, with at most two Great Demons using Spiritual Sense to convey simple information such as images.
