Mr Spuddy Face
A line of toys available for purchase at the joke shop in Phedre Road. The manual, thought by Carrot Ironfoundersson to be a book of disguises, influenced the captain to wear a false nose and moustache with a brown bowler hat. Thanks to accidental Boffo, the disguise worked. At least, the Librarian mistook him for a walking potato.
Annotation
Lo and behold, even walking potatoes have made it from Roundworld to Discworld.