Allen Avadonia, born Alexiel Lucifen d'Autriche and regarded as The Servant of Evil, was the last Prince of the Kingdom of Lucifenia and a servant to his twin sister, Princess Riliane. After the death of their father, the twins were separated in a political dispute. Pronounced dead and adopted by Leonhart Avadonia, "Allen" returned to the royal palace to serve as his sister's chamberlain, helping exterminate any opposition to Riliane's tyranny.