Cassandra has short red hair with two points at the front, comparable to demon horns, white eyes and a red sweater. She wears a gray jacket and boots with red soles and bright yellow upside-down crosses. She also has short red nails and has red lipstick on her bottom lip. Cassandra carries a TEC-9 in her right hand and a small dark gray book in her left. She is usually angry, but can have soft spots. She is secretly an alien in a human disguise, also known as a Penilian.