Perv Asshat

Perv Asshat (ドエム・ケツハット) was the Oriana Kingdom's Royal Chancellor and Rose's ex-fiancée. He was secretly a member of the Cult of Diablos who sought to become the 12th seat of the Round Knights through seizing the kingdom and Rose for the Cult's experimentation. After his crimes were publicly exposed, he was beheaded by Mordred to silence him after his incompetency exposed the Cult's activities.

Appearance
Perv was a handsome man who appeared to be in his thirties with brown facial hair. He donned a red noble suit with yellow outlining and white slacks. In the Anime and Manga, his hair was long enough to be tied into a ponytail.

Personality
Perv initially appeared to be a well-respected man with polite demeanor and soft-spoken intellectual. But in truth, Perv was a treacherous schemer with a manipulative nature, having no loyalty to anyone but himself. He rarely shows any sign of anxiety or distress, and often has entire situations well planned out in advance. Whenever confronted, he was casual and uncaring, attempting to derail the conversation and make small talk. This often infuriates those he talked to.

He was almost willing to use anyone around him as pawns to further his ambitions and would switch sides if it meant benefiting his agenda as he was willing to do anything necessary and wouldn't stop at anything to achieve his goals. This included manipulating or killing anyone especially Midgar and their princess. However, he was self aware of his surroundings and cautious enough to know when it'll work against him. This was demonstrated after he realized Beatrix's presence and knew it was a terrible idea if he were to off either her or the princess.

He was a vindictive man as he expressed jealousy and hatred when he saw Mundane Mann as a much better swordsman than him and refused to acknowledge it. He was overconfident when he thought that his plans will succeed until Rose and shadow foiled him every time.

After the Bushin Festival Tournament, he became paranoid after witnessing Shadow and his organization's prowess firsthand. Because of the aforementioned, he doubted the Cult's abilities in maintaining their status quo and crushing their biggest opposition. At the supposed wedding ceremony with Rose, Perv tried to tighten the security and was still doubtful. His paranoia was caused by the consequences of failure in his mission to seize the kingdom after gaining Mordred's support. He became frightful of further failure after reporting his botched attempt at retrieving Rose and loss of their puppet to the Round Knight.

When he realized that the "Ring of Succession" was missing from the box he kept, he tried to improvise by buying time to look for it. His premonition came true at the wedding when Rose wore the ring and exposed his crime to the attendance. This lead to Mordred to behead him to prevent any further Cult's intel had from being leaked, even having him glaringly remark his incompetence.

Powers & Abilities
As Duke and Royal Chancellor, Perv held enormous political power and influence only second to the king. Although an advisor, he was merely a representative and spokesman for the kingdom. He possessed some physical strength and magical power equal to the "Second Children" of the Cult albeit the weakest of them all.

Genius Intellect
His most prominent trait was his tremendous intellect as he well-versed in creating plans through strategy and tactics, while avoiding any suspicion from any party. He has a great talent for analyzing and observing everything in his presence, allowing him to understand a person's pattern of thinking and better manipulate them. He can formulate well-thought-out plans several steps ahead of others, some of which have a long term in mind. During his time as a Royal Chancellor, Perv had been engaging in politics while allowing him to effectively manipulate any situations around him.

Swordsmanship
During the Bushin Festival Tournament, he claimed to Iris that his swordsmanship were "decent" and acknowledged that he was no match for her, Beatrix, Shadow, or even Rose. This was further demonstrated when Rose overpowered him at their supposed wedding. Initially believing to be evenly matched, the former princess rebuked that his sloppy swordsmanship wouldn't be able to take anyone down before defeating him with ease.

Expert Strategist & Tactician
Despite his mediocre sword prowess, he more than made up for his manipulative nature and political influence within the Cult. He proved himself to be a skilled and flexible tactician, as he skillfully adjusted seamlessly to any given combat situation, if not planning out events well in advance. He understood the strengths, weaknesses and mannerisms of his enemies, and created strategies to achieve victory. Despite knowing full well the strengths he possesses, Perv is highly cautious of his opponent in battle, even leaving no blind spots on his weakness.

Master Manipulator
He has proven himself to be a very crafty and cunning man as he could deceive and manipulate others around him in various ways for other purposes. For years, he convinced everyone around him that he was a capable politician with the best intentions for his kingdom whilst performing wicked deeds. He was masterful at planning when he garnered Mordred's support in elevating him to 12th seat conditionally and attracted Reina Oriana to conspire against her kingdom through brainwashing her husband. This allowed him leeway to accomplish his objectives, ensuring that he had planned out well. Despite performing these feats, he garnered suspicion from Iris and Beatrix albeit inadvertently.

Trivia

 * His 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 returned in Volume 4.
 * He was the only member within the Cult depicted without a sword, most likely in due to his insider occupation.
 * In the novels, the depiction of his death varies.
 * In the Light Novel, Perv was beheaded by Mordred after Rose defeated him in a duel after she exposed him at their supposed wedding.
 * In the Web Novel, Shadow killed him after he broke his mind first through an experiment.
 * Perv personality bears resemblance to Sōsuke Aizen from the anime "Bleach", even both characters were voiced by Show Hayami.