Cyn's chilling personality, stemming from her mental and physical deformities, instills fear in those around her. Her peculiar way of speaking and unsettling behaviors make her interactions eerie. She often describes her actions verbally and has an awkward, unsteady gait. When with her "big brother" N and mistress Tessa, she feigns a childlike and joyful demeanor. Yet, Cyn's true nature shows when not under their gaze, revealing her anger, malice, and inclination for violence against her abuse.