Medessa is a character in the anime Entaku no Kishi Monogatari: Moero Arthur. She is a powerful witch and a key antagonist in the story. Her background is tied to the evil King Lavik, with whom she forms an alliance to overthrow the rightful ruler of Camelot, King Uther Pendragon. It is she who aids Lavik in his initial assault on Camelot, leading to the death of Uther and the queen. Medessa’s personality is defined by her cunning and ambition. She is portrayed as a malicious sorceress who uses her magical abilities to further Lavik’s conquest and to oppose the young Arthur after he claims Excalibur and proves himself the true king. Her motivations appear rooted in a desire for power and control, as she willingly aligns with Lavik to seize control of the kingdom rather than supporting the legitimate heir. In the story’s first half, Medessa serves as a primary villain alongside Lavik, using her witchcraft to create obstacles for Arthur and his knights. She is a formidable opponent whose magic poses a significant threat to the heroes. Her role is that of a recurring adversary who must be overcome for Arthur to unify Britain. Medessa’s key relationship is with King Lavik, whom she protects and assists throughout the conflict; she acts as his chief magical support. There is no indication of personal development or redemption—she remains a dedicated antagonist throughout her appearances. Notable abilities include her mastery of sorcery, which allows her to cast spells, summon creatures, and manipulate elements. She is also shown to be a strategist, coordinating with Lavik to plan attacks on Camelot. Medessa’s presence reinforces the theme of good versus evil, as she embodies the dark magic that Arthur and his knights must defeat to restore peace and justice to the land.