Karen has long curly-ish blue hair and dark hazel eyes. She always has a wide smile on her face, and is a flirty, extroverted, charismatic character. She is funny and comedic, and pretends to be a vapid airhead, but she is much more intelligent, cunning and ruthless than thought. She does have low self-esteem though due to her "hidden darkness"--- a psychopathic null aura that nullifies all psychics and aura guardians without much trouble. Under her exterior she is depressed and vulnerable.