Like almost all demons, he wears a mask protecting his eyes and face. Other than that, Yverk seems to be a tall demon who wears formal clothes, probably because of his position as the leader of his house.
Being the head of his respective house, Yverk seems to be a powerful and strict man who constantly reprimanded Dozza on his manners and behavior. Yverk seems to hold a lot of respect to the queen, instantly kneeling for her when she entered the room where he was waiting for her.
Holding a Vida plant in his hands, Yverk commented on how the orphans in the premium farms would satisfy since they are special meals for to feast on as compared to the lower grade human meat he and the other demons consume. Yverk added how they should celebrate the harvest and pray for .
On November 2047, in the imperial capital, Yverk stood side by side with the four other representatives of the different houses. Yverk was consistently reprimanding Dozza's manners and kneeled onto the ground when queen Legravalima made her entrance.