TV-Series
Description
Cú Chulainn is one of the heroines of the story and initially appears not as a student, but as a powerful dragon who infiltrates and attacks Rosewood Academy. Her true form is that of a treasure dragon, also referred to as a baby dragon, who transforms into a young girl after being defeated. In her humanoid guise, she is depicted with blonde twin-tail hair, blue eyes, small horns, and wears distinctive Arabian-style pants.

Her personality is a blend of childish innocence and draconic arrogance. She is characterized as a bratty and lonely girl who genuinely desires friendship but lacks the social understanding of how to form those bonds. Because of her nature as a dragon, she instinctively only acknowledges and respects those who are stronger than her, viewing anyone weaker as unworthy of her attention or companionship. This creates a central conflict for her character: she longs for friends but her own pride and strength prevent her from accepting those around her.

Her primary motivation shifts from simple aggression to a deep-seated need for belonging. After being defeated by the protagonist, Blade, she immediately latches onto him, calling him Parent. This act demonstrates a core aspect of her behavior, which is to fundamentally attach herself to the strongest figure she can find, seeking guidance and a sense of family.

Within the story, Cú Chulainn serves as a catalyst for class unity. The episode centered on her revolves around Blade teaching her how to make friends. Her inability to accept her classmates stems from her belief that they are too weak. It is only when the entire class works together to fight her as a collective that she finally recognizes their strength and accepts them all as her friends. This event integrates her into the school and resolves her immediate loneliness.

Her most significant relationship is with Blade, whom she views as her parent and seeks to emulate and gain attention from. She often acts out to get his focus, displaying a clingy and possessive streak typical of a child. Regarding her classmates, her initial contempt for them transforms into acceptance only after they prove their collective strength, allowing her to finally see them as equals and companions.

Cú Chulainn undergoes a notable development from a solitary monster to an integrated member of the class. Her journey highlights the theme of strength versus companionship. While she is physically powerful, her emotional vulnerability is revealed in moments of privacy, such as when she is seen playing alone with plush toys, underscoring her loneliness despite her might. Her arc culminates in her learning that strength can be found in unity, not just in individual power.

Regarding her notable abilities, she possesses immense physical strength and durability as a dragon, enough to necessitate the entire class working together to subdue her. She can shapeshift between a formidable dragon form and a human girl form at will. Despite her power, she has a notable weakness for spicy food, which has been used to subdue her when she is in her dragon state.