He used to have long black hair but cut it short (I don't know the name of the hairstyle, so please just check the picture;;). He has black hair and ruby-like red eyes. The great Magician of the Tower. He teaches Athy magic. He is playful and has the nickname 'Black Nutcase' (given by Athy). In front of Claude or others, he acts like a pure, genius boy magician. He is considered one of the 'Four Heavenly Kings' along with Felix Robane, Athanasia's knight, and Ijekiel Alpheus, the son of the Alpheus family. He only shows his true self in front of Athy. He likes Athanasia.

White hair and golden eyes. He is kind. He is the sole heir to the Alpheus family. He is in a tense rivalry with Lucas over Athy and flirts with her subtly. He is brilliant enough to have studied abroad in Arlanta as a child.

Originally a daughter of a noble family, she admired Diana's free spirit and gave up her noble status to care for Athanasia in the Ruby Palace. She is like a mother to Athanasia (Guest) and gives off a 'newlywed' vibe with Felix Robane.

Full name is Claude de Alger Obelia. He is Athanasia's father. He is a huge 'daughter-fool' and a tsundere, so he rarely expresses affection. However, it shows subtly. He has blonde hair and the blue jewel eyes that only the direct imperial bloodline possesses.