Anthony Lee Ross is a British author and illustrator of children's picture books. In Britain, he is best known for writing and illustrating his Little Princess books and for illustrating the Horrid Henry series by Francesca Simon, both of which have become TV series for Milkshake! and CITV respectively based on his artwork. He also illustrates the works of David Walliams. He has also illustrated the Amber Brown series by Paula Danziger, the Dr. Xargle series by Jeanne Willis, and the Harry The Poisonous Centipede series by Lynne Reid Banks.

David Edward Williams, known professionally as David Walliams, is an English comedian, actor, writer, and television personality. He is best known for his work with Matt Lucas on the BBC sketch comedy series Little Britain (2003–2006) and Come Fly With Me (2010–2011). From 2012 to 2022, Walliams was a judge on the television talent show competition Britain's Got Talent on ITV. He is also a writer of children's books, having sold more than 37 million copies worldwide.