As a toy, Mr. Hopp is small and cute, yet still creepy stuffed rabbit who wears an eerie smile with buck teeth, a red bow tie, along with blue pants. He has light gray fur, yellow eyes, light gray ears (with pink on the inside), and white whiskers. Mr. Hopp's possesses the ability to shapeshift, taking various different forms throughout the games he appears in. His most prominent form is a tall, humanoid, and demonic version of himself. In this form, Mr. Hopp is much bigger than in his toy form.