Adam Hargreaves (born 18 June 1963) is an English author and illustrator. The son of Roger Hargreaves, he continues his father’s successful Mr. Men series of children’s books. The younger Hargreaves reputedly served as inspiration for the series. At the age of 8, he asked his father “What does a tickle look like?”, and Roger was inspired by that question to create the first book, Mr. Tickle, published in August 1971.