Claudia Tradio (Kor. 클라우디아 트라디오) is the daughter of Lagus and a member of the Tradio Clan. After her father's death, she became the new clan leader.
Claudia has purple hair which she keeps in two braids on either side of her head. She wears the traditional black noble outfit.
Although loyal to her father, she is shown to be very uncomfortable witnessing Lagus' cruel abuse of Gejutel K. Landegre, who is Claudia's caretaker and benefactor. Ultimately she chooses the fate of Tradio Clan and Lukedonia over her father's self-destructive ambition.
Claudia is the daughter and heiress of Lagus Tradio. She took charge of the family when her clan leader left after betraying the Noblesse and the Previous Lord.
Claudia first appears when Lagus returns to Lukedonia and visits the Tradio Clan's mansion. She pays her respect to her father and the true clan leader of her family.
She and Lagus visit Gejutel's mansion where the latter overpowers Gejutel. She witnesses her father commit one crime after another against the Noble clan leaders of Lukedonia. She shows discomfort at Lagus' actions especially when he tortures Gejutel who had protected her clan after his betrayal.
Lagus fuses himself with the Blood Stone to absorb the life essence from his clan members during his fight with Raizel. Claudia is horrified to learn that her father planned to use them as sacrifice and saves them by destroying the rune stones which were acting as a medium to absorb their life essence.
Claudia begs the Lord to punish her for her role in the invasion but pardon her clan members who were innocent. Gejutel defends her by explaining that she prevented the worst from happening. To her surprise, Raskreia appoints her as the new leader of Tradio Clan which is cleared of treason and reinstated in the Lukedonian society.