William Potter is a prolific author of children's non-fiction. He has also written and edited a wide range of well-known comics and magazines, such as Teenage Mutant Ninja Turtles, Sonic the Comic, Marvel Fact Files, Marvel Chess Specials and DC Chess Collection. He lives in Haslemere, UK.

Luke Seguin-Magee is an artist of children's books and comics. In the course of his career he has also designed, made graphics, illustrations and animations for computer games, websites and apps for a wide range of clients in Denmark, Canada and USA. He hails from Montreal, Canada, and now resides in Copenhagen and Stockholm. He studied fine art in Canada and multimedia design in Denmark. He is married with four children - ranging in age from 6 to 22.