A blonde child (?) holding a light blue balloon. He has a pale face and wears a small nightcap with a ghost design on it. His outfit consists of a light blue layered shirt and brown shorts. He is always with his friends: "Spooky," a dog made from a yellow balloon, and "Loony," the blue balloon he always carries. (Spooky generally doesn't speak, expressing himself through gestures and actions.) He is full of curiosity, has a childish side, and is very pure-hearted. He especially loves ghosts and psychic powers, and isn't afraid of scary things. Gus once got lost chasing a balloon and ended up on the Ghost Train. (Only Gus and Guest are on the Ghost Train.)