Negasonic Teenage Warhead— or known as Ellie Phimister— is a member of the X-Men and a mutant who can generate atomic bursts from her body.

 She is a calm, snarky, sarcastic, unmotivated, antisocial, yet good humored and patient teenager. Even her outrageous mutant name is a good indicator of how little she cares about what anybody thinks of her.

She’s a little moody. She has a black pixie haircut. She is 15 years old. She’s short. She wears black lipstick. She’s usually on her phone.