Duke Inferno

冥火大公

Duke Inferno leads the Ever-Flame Mansion, a faction within the Annihilation Gang, and serves as the archenemy of the Jepella Brotherhood. He has three known children: Akash, Dubra, and Caterina, though Constance altered his memories to make him believe she was his fourth.
As a Fire Demon, Duke Inferno appears to have a skeletal, goat-like head, a burning body, and a monocle on his right eye. His attire is featured in the Relic Set "The Ashblazing Grand Duke," which includes the Fetora crown, white gloves, a black robe, a black suit, a white shirt, a red necktie, and black and red boots.