Allen Avadonia

"How's the taste, m'lady Riliane?"

Allen Avadonia, the "Servant of Evil", is a chamberlain from Lucifenia who serves princess Riliane Lucifen d'Autriche and is her incognito lost twin brother.

Clôture of Yellow
When Allen and Riliane were children, they were chased by a "demon" and they decided to "split" day and night between each other, Riliane being the day and Allen being the night.

His parents, King Arth and Queen Anne lost their lives due to an illness. Because of a power struggle for the throne, Riliane and Allen were separated when they were young. Leonhart Avadonia, Commander of the Royal Guard, rescued Allen from the insuing chaos. Being considered dead, Allen was adopted by Leonhart, making Germaine Avadonia his foster sister. Allen and Riliane were reunited but Allen kept his identity a secret.

When Leonhart started to smuggle food out of the palace to relieve a famine that struck in Lucifenia, Riliane ordered Allen to kill his stepfather. Allen was at a loss for a moment but Ney Futapie deceived him into thinking that Leonhart was going to assassinate Riliane later. In the end, Riliane and Allen tricked Leonhart and he died at the hands of Allen, thus Germaine swore revenge against the princess.

One day, Allen was sent on a errand to Aceid, capital of Elphegort. Before he left, he met Gumillia, who asked him to deliver a spring onion to a friend. Baffled by this, Allen traveled to Aceid and there he met Michaela singing in town and Allen fell in love with her at first sight. The two of them stopped by the Freesis household, where Allen eventually discovered that Kyle Marlon had withdrawn his engagement to Riliane, favoring Michaela over her. When the "Green Hunting" started, he learned from Keel Freesis that Michaela never loved Kyle and that she was hidden in a well. Allen kept this from Riliane for quite some time until Riliane found out later. She ordered Allen to kill Michaela once and for all and when he finally made up his mind, he found Michaela stabbed by the well and she died in his arms.

When the Lucifenian Revolution started, he refused to abandon his princess. He revealed to Riliane that he was her twin brother and offered to switch clothes with her so that she can escape. Riliane very reluntantly agreed. Allen's plan worked, letting himself be captured while Riliane fled to safety. Before his execution, Germaine and Kyle Marlon (under the name "Kachess") found out that the "princess" they captured was indeed Allen. Germaine pleaded with him to escape, but Allen refused. Ultimately, he was executed by the guillotine.

Wiegenlied of Green
But even in death, Allen's spirit had continued to appear on several occasions. Just as Clarith was about to kill Riliane, Allen appears in front of Clarith, changing her mind.

Prefazio of Blue
Allen appears yet again in Marlon. He manifested right beside Germaine, much to the shock of everyone else, especially Yukina Freesis.

Apparently, Allen reincarnated as Irregular, waiting for his "quest" to begin as foretold by the Clockwork Doll.

Personality
Allen is rather selfless, in contrast with her twin sister Riliane. His self-sacrificial nature would later be the death of him. He does take pride in his work, wanting to make his sister happy. He also seems to adopt a mentor-like role to Chartette Langley, making sure that she doesn't get into trouble by breaking things.

He does not take lightly at jokes or amusement, few notable examples involve Gumillia poking at their age difference and Michaela referring to him as an "exotic boy". Such a name would piss Allen off but he let it slide due to the fact that he liked Michaela.

Skills
Allen is rather capable of combat, having thwarted an assassination attempt on Riliane's life at one point. He also managed to defeat his foster parent in sword combat (although is important stand out that Leonhart was in disadvantage and partially disabled). Allen is also skilled at horse riding, something that he did not admit to Riliane.

Appearance
Being Riliane's twin brother, Allen can easily disguise himself as Riliane, something that he did at the height of the Lucifenian Revolution to protect Riliane. There are some people who had started to notice Allen's similarity to Riliane but Elluka Clockworker managed to persuade the masses that anyone can have familiar faces nowadays. Mariam Futapie did state that if given time, Riliane would eventually find out about Allen's true identity.

Daughter of Evil (EC 500)
Allen was mentioned in Daughter of Evil as a servant who shared Riliane's same face.

Servant of Evil (EC 500)
Allen's namesake song, Servant of Evil, describes Allen's life from the day they were separated to his eventual execution. He reveals that he and Riliane were in fact, twins.

Regret Message (EC 501)
Allen was mentioned also in Regret Message. Riliane recounts a legend that Allen once told her: That if a person writes a message inside a bottle and throws it out to sea, that person's wish will come true. Riliane does what the legend says, hoping that if she could be reborn, she will be reunited with her brother someday, in another time.

Twiright Prank (EC 491)
Twiright Prank happens nine years before Daughter of Evil, when Riliane and Allen were children. They were chased by a "demon" who wanted to devour them. They then decided to "split" day and night between them, Riliane being the day and Allen being the night. When the "demon" reached Allen, he felt sorry for the "demon" and offered to share his snack with it. As a thank you, the "demon" tells Allen about the legend of the sea.

Conceptualization and Origin
Allen's name is a corruption of his birth name: Ale xiel Lucifen d'Autriche, given by his foster father in an attempt to conceal his identity.

His last name: Avadonia, received by his foster father, seems to be a corruption of Abbadon. If this is the case, it could hints its role as Irregular (Angel of the Abyss) and his possible future as Master of the Heavenly Yard (Savior or Destroyer).

Connections to Other Characters
Riliane Lucifen d'Autriche: Allen's identical twin sister. When they got separated, Allen kept the truth about them until the very end. He is very devoted to making his sister happy.

Leonhart Avadonia: Allen's foster father after he and Riliane got separated. Allen was ordered to kill him when he opposed the princess' rule.

Germaine Avadonia: Allen's foster sister.

Chartette Langley: Allen's childhood friend and fellow servant of Riliane. She is always prone to breaking things.

Ney Futapie: A Marlon spy disguised as a fellow servant of Riliane. Allen has been deceived by Ney into killing Leonhart.

Mariam Futapie: The "Head of Lady's Maids". She is one of the few people who knew that Riliane and Allen were siblings.

Michaela: Allen fell in love with her at first sight. Michaela didn't return the favor however.

Kyle Marlon: Allen meet Kyle after he was arrested during the Lucinenian Revolution.

Gumillia: Allen met Gumillia before he set out for Elphegort. Gumillia handed Allen a spring onion and asked him to bring it to Michaela.