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 appears to be an aloof, angry goth girl who hates society and rules. The type of alien that Cassandra is is a "Penilian" who are black creatures with yellow eyes and measuring 15 meters. she is 25 years old.