Greg Gormley used to stuff cushions for a living. Then he learnt how to purify gold. Finally, he decided to do something more sensible. So he studied fine art. Greg has written and illustrated several picture books and was featured in the Oprah Winfrey Kids' Reading List. He lives in Cambridge with Ana, Pepa and Sid the dog and spends his time arguing with academics about robots.

Chris Mould was born in Bradford, England, and has lived and worked there all his life. He began drawing at a very early age and hasn't stopped since. He trained in art college for six years altogether starting in Dewsbury College and moving to Leeds, during which time he gained a joint honours degree in graphic design and illustration.