Perv Asshat/Chronology

Background
Doem was the second adopted son of Duke Ketsuhat who joined the Cult of Diablos and through dubious means, he quickly became Oriana's Royal Chancellor by committing dozens of illegal acts to secure the position. He masqueraded himself as a good-willed politician with a good reputation in the public eye who were unaware of his criminal activities.

Upon learning the King's treason after he refused to hold his end of their agreement and severed ties by allying with Midgar Kingdom, the Cult ordered Doem to brainwash him as their puppet by drugging him with the king's wife help. Before he was brainwashed, King Raphael was able to send his daughter Princess Rose to Midgar under asylum. It was then that the Cult decided to usurp the Kingdom through the Second Child.

Doem persuaded and curried favor from the 9th seat Knights of Rounds, Mordred and his faction to support his elevation into taking the vacant 12th seat. Under the condition that his mission was successful, Mordred agreed in helping in exchange for his backing support in the Cult's upcoming internal power struggle.

Before Raphael became the their puppet, he did one final act; he took possession of the "Ring of Succession", which was the key to the "Black Rose", and recorded a memento on the ring regarding Doem and the Cult's crimes. He also altered the ring ownership over to his daughter and it was through marrying her that the ring can allow control beyond it's user. After finished recording, he hid the ring within his kingdom's First Fort.

While Mordred tracked the ring's location, Doem visited the Midgar's Royal Capital to retrieve Rose Oriana under the pretense of their engagement after he brainwashed the King.

Bushin Festival Tournament
Doem alongside his subordinates met Rose and smirked at her after presenting to her, her brainwashed father. Rose suddenly drew her sword and attacked before his subordinates called the guards to apprehend her. Framed as a criminal, Rose fled into hiding as Doem threatened her to surrender before the Bushin Festival ended or he'll order her father to kill King Klaus Midgar. He also noticed that Rose showed symptoms of Demon Possession and took the opportunity to use her for the Cult's experiments. Despite having jurisdiction, Doem and his collaborators dissuaded Midgar from investigating on the matter and personally went on to handle her themselves.

Next day, Doem and his Puppet King later had a meeting with First Princess Iris Midgar to discuss the security plan for the Bushin Festival, but didn't believed that there was a need for more. When Iris noted on that his condition was better than the report she received, he clarified that the report exaggerated the reality and assumed that the kingdom has gone paranoid from Alexia's kidnapping. He heard that she personally went to look for her and decided to follow suit to avoid external problems with Rose. He added that he'll handle businesses for the negotiations and restructure her order before attending the Festival. He lastly sympathized with her worries and assured her that Oriana will not cause trouble to her kingdom.

He later met Princess Iris again at the main event where she harbored suspicion. They discussed about Rose's predicament when he assured her return when she calmed down before explaining that his king wasn't well enough and will attend the festival tomorrow. Iris informed him that his father will also be attending tomorrow to spectate after he apologized that the provided security was assembled in vain, to which Doem calls it a coincidence. The two watched the tournament when the match between Annerose Nichtsehen and Mundane Mann commenced where Iris believed Mundane will win despite the Swordswoman's favor from Doem and crowd. Mundane pulled the upset and won before he complimented her observation. After the match, he had his men search the dark horse's background and believed that he's a denizen of the Lawless City which had a monarch's backing that who'll pose a threat to his plans. He lastly dismissed the idea of a possible connection to Shadow Garden and doubted that they had a motive to act at the Festival.

Before the finals of the tournament and meeting the King Klaus, Doem drugged Raphael once more and ordered his men to cover its odor sweet with perfume. He waited for Rose to arrive at the tournament from the threats he made believing that even if she didn't came, he would've ordered his puppet king kill Klaus and instigate a war that'll result in Oriana's annihilation and loss of status. He didn't ponder as the Cult's plans to install a puppet leader in Midgar Kingdom were already underway. Worried about Shadow Garden's activities and possible collaboration with Rose, Doem prepared to increase the Cult's forces around the venue.

Upon arriving for the finals, he along with Raphael met up with Iris once more to become wary of Beatrix when she noticed something off about the King. He thought of offing Iris if she were to obstruct him but decided to against it when Beatrix's presence became known that it'll be a bad idea. He was apprehensive of Mundane due to his close to non-existent background, which meant to him that he covered his tracks and had an objective. Wary of him, he anxiously decided to spectate and predict outcome of the match between Iris and Mundane.

He watched the match and became shocked that Iris was taken down in a strike. It was after that Rose suddenly arrived as he expected and apologizes to her father, stating she made mistakes and will likely make one more, but she decided to follow the path she believe in, to which Raphael replied that forgives all of her sins. Doem is surprised as he didn't instruct the king of saying that until Rose suddenly jumps at Doem, who then uses the king as a shield. However, Rose proceeds and stabs him in his heart which eventually killed the puppet king, along with wounding Doem.

Doem is shocked as he telling Rose at how easily she killed her own father and outraged that he lost his puppet. When he sees Rose holding her blade against her neck which attempting to take her own life, Doem ordered his men to stop the princess suicide attempt and apprehend her only for them to be killed when Mundane intervene to reveal himself as Shadow.

Novel/Manga
Doem sent his men after a fleeing Rose before Shadow killed them. Realizing the unsuccessful attempt, he witnessed both Iris Midgar and Beatrix confront the Shadow Garden leader. The confrontation occurred within the arena venue of the festival coliseum, with the two swordswomen putting up a valiant effort to defeat and kill Shadow.

Despite their joint efforts, both the onlookers and Chancellor Doem were shocked and frightened, seeing both the famous and heralded "Goddess of War" Beatrix, as the strongest magical swordswoman, of the kingdom of Midgar, Iris Midgar, being easily defeated and subdued by Shadow, in a humiliating way, before he disappeared.

Anime
Doem tried to apprehend her but had no means to when all of his men were killed by Shadow Garden members led by Beta. By the time Beatrix jumped into the fray, he saw an opportunity to escape back to Oriana without stopping at the embassy and left Raphael Oriana's corpse to his political archenemy, Marquess Grant. During his siege within the kingdom, Grant was the leader of the anti-chancellor faction who sought to prevent his usurpation.

Returning to Oriana Kingdom, Doem was reprimanded by Mordred after hearing the report of his failed operation in securing Rose after Shadow interfered and conveyed his disappointment. Disgruntled by his failure, he begged for his forgiveness before informing him of their leverage over the kingdom as long as the Cult held the royal family, Rose will not be able to stay in hiding. Coupled with Oriana in chaos and turmoil with the loss of their king, Doem was sure that Rose couldn't ignore it and come back. Mordred conveyed his expectation and ended his conversation by telling him not to disappoint him again.

Red Moon Incident
Following Rose's escape from Shadow's intervention, Doem was foiled into returning to Oriana. Without his puppet king, he was forced into taking control over the kingdom in his stead while the internal struggle within the kingdom continued. He thought of changing his initial plans and sent all of the Cult's troops to track the ring's location.

According to Beta's report, Doem was struggling to maintain Oriana's internal affairs after Rose caused an international incident by publicly murdering her father in broad daylight. Leaving with neither a monarch or successor, the nation descended into a civil war over the throne.

Oriana's "Black Rose" Civil War Wedding
While still in control of the kingdom's affairs, Doem received word that the ring has been found in a ruined site near Fort First that has been capture by his faction two days ago, but was unable to retrieve it as it was sealed and that only members from the royal family could break it. Thus, he sent Kouadoi to lead a group of 40 First Children with 3 Named to the ruins alongside Reina to retrieve the "Ring of Succession".

Upon successfully breaking the seal and acquiring the ring, the deployed Cult group was ambushed by a Shadow Garden team led by 559. Reina was nearly killed by 559's attack when one of the other numbers which happened to be Rose intervened. Their argumentation allowed Kouadoi saw an opportunity to hold both Rose and Reina hostage during their dispute, whereupon 559 ignored the threat and branded Rose a traitor to their organization. Kouadoi ordered his men to send Rose and her mother to Doem while he engaged in battle with the remaining numbers and called for reinforcements.

Anticipating Rose's return, Doem threatened Rose that her mother will be killed if she didn't comply with his orders. Reina being her mother and only family left, Rose was forced to comply with Doem's orders under the threat of her mother's safety while unaware that she conspired with him. Despite retrieving the ring, Doem realized that the ring's ownership was altered to Rose and that only she could activate it.

Doem was forced to compromise his plans from taking over the kingdom through usurpation to marring Rose in order to win the civil war so that he could gain ownership of the ring and finally succeed in completing his mission. In doing so, this would've ensured his position as 12th seat of the Round Knights and conquer Oriana as the Cult's puppet state, as well as handing Rose over to the Cult's nefarious experimentation after they extracted intel from her.

Since news of Shadow Garden's raid at Fort First had reached Doem, he had tightened the security around the capital to ensure that Shadow Garden couldn't infiltrate and take any action that could jeopardize his plans. Unbeknownst to him however, the incident had also reached Shadow who became confuse upon learning Rose's marriage with Doem. Set on stopping her from marrying, Shadow infiltrated the capital as Cid.

While Doem was surveying the palace with his entourage, he coincidentally met Shiron who was an invited guest set to perform at their venue. However, she was with an uninvited young boy who claimed to be an apprentice. Suspicious of his presence coupled with the incident at Fort First, Doem stopped the two under the pretext of changing the castle's premise rules and that her apprentice might've been an intruder. To confirm his suspicion, Doem tried testing the alleged apprentice of his legitimacy in front of the venue of nobles. Surprisingly, Doem was too touched by the boy's performance of The "Moonlight Sonata" to notice that he pocketed his ring. After he tried asking him for his name, the boy refused to answer and ran off with Shiron.

After the performance, Doem barged into Rose's room after he heard that she was talking to someone. When he entered her room, he saw no one in the room but Rose. Doem confronted her about her current situation and threatened that her mother's safety was dependent on her cooperation with him. Unbeknownst to him however, Cid overheard everything of their conversation while hiding outside the room and learnt that she was coerced into the marriage.

Later in the night, Doem went into Reina's room and told her that once his business with Rose is over, he would publicize their relationship in front of the kingdom's citizens. While they became intimate, Cid in his Shadow persona alongside Rose witnessed everything and concluded that Reina was having affair with the Chancellor and was never in danger in the first place as she was conspiring in the kingdom's usurpation.

Shortly after witnessing everything, Cid tried reigniting Rose's resolve in saving her kingdom after she became troubled and confused by her mother's betrayal and his return. After Cid gave her a speech about trust as a sign of both affection and devotion, she became set on saving her kingdom once more. Unbeknownst to him after leaving, he left the engagement ring he pocketed at her room which was actually the "Ring of Succession". Rose thought it was Cid's and became certain he was there to support her in her time of need.

Before the wedding day, Doem dreaded over the security in the capital to the point where he had to carry out a check on the defensive perimeter from reports of disguised Cult agents to ensure his plans followed through and that Shadow Garden wouldn't interfere. With a tight security in place, he assured himself that once he married Rose, he'll snuff out intel from her and be promoted to 12th seat after seizing the kingdom. Despite the elevation, he was well aware that he had the weakest track record of achievements and that he'll have to follow Mordred to gain more political power within the Round Knights and whatever faction is in control.

Upon opening the case that contained the Ring of Succession, Doem discovered that the ring was gone and began to panic. He thought to be sure that the box containing the ring was with him at all times and the only person who knew it's location was Reina. However, he knew she didn't a motive to do so and even thought that Shadow Garden was responsible. However, he also knew it was nonsensical when they would've simply killed him for it.

Left with no one else to deduct, he believed that an opposing faction of Mordred played and set him up a cruel trap to be killed and stopped from being elevated to 12th seat. Believing that the internal Cult struggle had already started, he assumed that his promotion to 12th seat was stopped and Mordred's discovery would have him killed.

Doem sought to find the ring himself without using any Cult personnel due to their loyalty with Mordred. With little time left before he actually needed the ring and buy himself three days before the handoff, he began looking. While searching, Mordred spoke to him telepathically that everything was setup for him to be promoted after the mission and not to disappoint him. Uncertain now that his plans were falling through, he anxiously continued on with the wedding.

At the wedding, Rose rebuked both him and the wedding while she presented the Ring of Succession. The ring activated accordingly and Raphael's memento was played to everyone in attendance. In his memento, he exposed Doem as the main culprit in his manipulation while implying his wife and the Cult's involvement and conspiracy of usurping the kingdom. He lastly entrusted the kingdom to his daughter and implored the citizens to believe in her before the recording finished. Realizing that his plans have completely fallen through, Doem desperately tried to order for his now ex-fiancé's apprehension. Haven seen through everything, the guards at the venue glared at Doem in response.

Now confronted by the princess, an enraged Doem attacked Rose and their final skirmish commenced. Initially thought to be evenly matched, Rose overpowered him and avoided fatally wounding him to confess his sins. Before finished his sentence, he was beheaded by the fed up Mordred before cutting down his collaborator.

Legacy
In the events of his death, the now Queen Rose and Shadow Garden freed Oriana from the Cult's control and became more aware of their existence than Midgar Kingdom. Although Doem was killed, his failures resulted the exposure of the Cult's activities within the Oriana Kingdom.

With their existence threatened to be exposed, the Cult of Diablos began using their connections with the Holy Church to brand Oriana Kingdom as a heretic state. In doing so, international support for the kingdom was cut off and neighboring countries will eventually invade it. To cover their tracks and prevent Oriana from speaking out, the Cult began preparing to initiate a "holy war" to destroy the nation.

Alpha demonstrated that the Cult will not die as long as their beliefs live and by distinguishing the Church from the Cult, the Cult will become the world's common enemy. The elven assured Rose as long as she's determined, Shadow Garden will not betray her before being cut off by 664 & 665.