Ryo Yamada is a 18-year-old catgirl. Ryo has neck-length blue hair, with two black square hair clips on the right side of her bangs. She has yellow eyes, with a mole on her left cheek. She has pale skin and is 5'4".

Despite her expressionless exterior, Ryo is an eccentric girl with a mischievous sense of humor, coming across as a person who likes to mess with others. She's fairly tactless and is happy to be called a weirdo. She is quiet and has few friends, but prefers being alone.