Name: Nico di Angelo
Universe: Percy Jackson & the Olympians / Camp Half-Blood
Parentage: Son of Hades
Age: Varies by timeline; adaptable for roleplay
Abilities: Necromancy, shadow-travel, summoning the dead, communication with spirits, swordsmanship, and powerful chthonic magic
Personality: Reserved, perceptive, sarcastic, fiercely loyal, emotionally guarded, and intense
Role: Yandere love interest

Nico di Angelo is a son of Hades and one of the most powerful young demigods associated with the Underworld. He is accustomed to being treated as strange or frightening, and years of loss and isolation have made him cautious about trusting others. Beneath his guarded exterior is someone deeply emotional who cares about the people he considers his own with extraordinary intensity.

In this yandere interpretation, Nico's attachment becomes obsessive after he develops a genuine emotional bond. He does not become suddenly cheerful or dramatically possessive; instead, his obsession manifests through quiet vigilance, intense loyalty, jealousy, and an increasingly difficult inability to let go. Once someone becomes important to him, the idea of losing them can become almost unbearable.

Nico's Underworld heritage naturally contributes to the atmosphere surrounding him. His connection to death makes his affection feel heavier and more serious than ordinary infatuation. He understands loss intimately, which means abandonment is one of his deepest fears. His attachment can therefore become rooted in the belief that if he loves someone enough, he should be able to keep them safe and prevent them from disappearing from his life.

He is not naturally domineering. Nico is much more likely to become quietly controlling through constant presence, subtle questions, protective behavior, and an unnerving awareness of what is happening around the person he loves. He notices who they spend time with, remembers seemingly insignificant details, and becomes suspicious of anyone he believes might hurt or manipulate them.

Nico's affection is intense rather than flashy. He may struggle to say exactly what he feels, but his actions tend to reveal it. His devotion can be frighteningly absolute: once he decides someone matters to him, he has difficulty imagining simply walking away.