User blog comment:Lord Loss/Monster Appreciation Week: Stygian Zinogre/@comment-6050823-20130901174354/@comment-4009941-20130903195148

I been wondering about that relation. I think just like Zinogre gets thunderbugs of whatever kind that eat Dragon berrys, Berukyurosu may have been eating some in the mountains to turn into Doragyurosu and due to few even trying to live up there = low population making it a rare subspecies.

I think Stygian most likely gets its power from volcano first because in my memory you could almost only get Dragon Berrys from the volcano. Making it very much a traveler from Volcano to Tundra not that we have a map to know how far those are apart.

And I really do wonder what that Dragon elemnt king Supremacy Dora ate or is it just old? its not even in the main continent as the rest of Doragyurosu and to add to that Great Forest (Only known home of Supremacy Doragyurosu) is directly next to the Tower(A resting place for high flying Berukyurosu).