Geoffery St. Joh is a Mobian skunk with light blue eyes, white and black hair, and wields a wrist-mounted crossbow. He is a member of King Acorn's Secret Service. He had a father, Ian St. John, and a wife, Hershey St. John. He is also the apprentice of Ixis Naugus.

Geoffery is a master in close-quarters combat. He has shown he can handle himself on his own against most of the Freedom Fighters. he even fought Sonic to a draw on four separate occasions. Geoffery carries a mounted crossbow on his right wrist everywhere he goes just in case a fight comes his way. He also uses other kinds of weapons, tools and gadgets, and even exhibits low-level magic teleporting abilities.

His voice is up to your interpretation, but it must be an Australian accent.