Perv Asshat

Perv Asshat (ドエム・ケツハット) was a Duke who serves as the Oriana Kingdom's royal chancellor and Rose's ex-fiancée. However, he secretly was a member of the Cult of Diablos who sought to become a Knights of Rounds by seizing the kingdom and hand over Rose for the Cult's experiments. When his crimes were uncovered, Mordred silenced him by beheading him after his incompetence expose the Cult's activities.

Appearance
Perv was a handsome man appeared to be in his thirties with brown hair and facial hair. He donned a red noble suit with a white slack. In the Anime, his hair was long enough to be a ponytail.

Personality
One key aspect about Perv is that he was a treacherous schemer with a manipulative nature, having no loyalty at all to anyone, even to his allies. He was willing to use almost everyone around him as pawns to further his ambitions and would switch sides if it suits his agenda as he willing to do anything necessary and won't stop at anything to achieve his goals, including manipulating or killing anyone.

After the Bushin Festival event, Perv was become paranoid after witnessing Shadow and the Shadow Garden's prowess firsthand. He even thinks that the Cult Of Diablos isn't as powerful as they think it is and are delusional to think they still have a firm grip of the world. Before and during his supposed wedding ceremony of Rose Oriana, Perv trying to tightens and still even doubts his security.

Powers & Abilities
As a Duke and Royal Chancellor, he had enormous influence, second to the king. Only by giving effective advice, he was appointed to represent his kingdom and be the spokesman for the king. He possessed some physical strength and magical power on par with the "Second Children" of the Cult of Diablos.

Swordsmanship
During the Bushin Festival, Perv claimed to Iris Midgar that his sword skills are "decent". Overall, he appears to be fully aware of his limits, acknowledging that he is no match for Iris, Beatrix, Shadow, Mordred, or even Rose.

Trivia

 * Perv's name is a gag by the author, as he often does for side characters.
 * His name in Japanese is "Doem Ketsuhat", which was roughly translated to "Perv Asshat" in the official Yen Press release in the West.
 * He was the first Cult member to survive his introductory arc until he returning in volume 4.
 * He was the only member within the Cult to not carry a sword.
 * In the novel, Perv's death is shown differently.
 * In the Light Novel, Perv was killed by Mordred after being defeated by Rose Oriana in a duel on their supposed wedding day.
 * In the Web Novel, Perv was killed by Cid Kagenō after he broke his mind first through an experiment before killing him.