Allen avadonia (Alexiel Lucifen D'autriche)

He's not very tall, he's blond with blue eyes and his hair falls a little below his shoulders.

Deep thinking? It's not bad to think about things. But nothing begins without action. You have a habit of trying to overcomplicate things in your mind.
—Sickle criticizing Allen's inability to act[source]
Allen possessed an analytical mind that helped him grasp politics from a young age, making him a capable diplomat despite his lack of involvement in political affairs. This also enabled him to be a skilled planner, including the ability to adapt his plans in case of complications,[1] though he sometimes fell short of expectations. After being executed by guillotine, Allen was traumatized and could sometimes lose his rational thinking when faced with beheadings. Also, after his death, he gained extensive knowledge of Bolganio's history through the Black Box.[2] However, as he could only read the memories of souls who had gone to the Celestial Garden, there were gaps in his knowledge regarding demonic contractors.[3]

Having trained under Leonhart, Allen was a skilled swordsman and knew several techniques; he even developed his own technique, the Unicorn Style, where he centered his sword in front of him while attacking. However, due to his lack of combat experience, Allen was prone to talking too much in battle and lacked the quick thinking to adapt to more difficult opponents.[4] As a servant, the boy was adept at a variety of tasks such as cleaning,[5] cooking, and running errands,[6] though he considered his skills inferior to those of his fellow servant, Ney.[5] He was also skilled at horsemanship and could sing.[1]

Due to his resemblance to his sister, Allen could disguise himself as Riliane in appearance and voice, though only to those who had not personally met either of them.[7] After her death, Allen was able to manifest her spirit in

his girlfriend and his sister

Allen was a responsible, loyal, and troubled young man. As a child, young Alexiel was gentle and trusting, submissive to his sister, and afraid of becoming selfish, as he later did. Although less so after his adoption, Allen continued to show kindness to others, particularly to his friends and his new family. As a servant, he also maintained a professional and courteous demeanor, especially when in the presence of his superiors.

In addition to this, Allen possessed a strong sense of justice and his own set of moral principles, which began in childhood and was exacerbated by his upbringing at the hands of Leonhart Avadonia. This led him to be disgusted by injustice and harm to the innocent; he typically took the initiative to help others, particularly those he cared about. During his service to Riliane, Allen found himself deeply conflicted as he strayed from his moral compass; because of this, he came to consider himself as "evil" as she was, even after her death. His desire to help was often hampered by his own indecisiveness about what the right course of action was.

As a result of his traumatic childhood, Allen was naturally unsociable and cynical, prone to sarcastic remarks about his sometimes absurd situations. He was also sensitive to ridicule and arrogant about his abilities and opinions, which could make him argumentative or competitive. He was also extremely pessimistic about the world around him, having adopted a view that everyone was his enemy when he was young, which, though tempered, he later transferred to his view of Riliane. At the end of the world, Allen finally understood that he didn't have to choose between everyone else and his sister, and he opened himself up to the idea of ​​creating a better world.

Despite having many close relationships in his life, Allen's most important was his sister, Riliane. Faithfully serving her and even becoming her friend, he dedicated himself to protecting her.

Allen Avadonia, born Alexiel Lucifen d'Autriche and known as the Servant of Evil, was the last prince of the Kingdom of Lucifenia and the most loyal servant of his twin sister, Princess Riliane. After their father's death, Alexiel and his twin sister were separated by a political dispute, and he was publicly declared dead. Adopted by Leonhart Avadonia, "Allen" returned to the royal palace to serve his sister, helping to eliminate any opposition to Riliane's tyranny.