Hampy was created in 1980. His first book was written in 1980 as well and first published 30 years later in 2008.
Ragfuss was first introduced in a comic strip when Hampy asked for a Cocker Spaniel. His real history came about in the book where he was a stray dog that Hampy brought into his home. They have been inseparable since.
Frippy was introduced in the book Hampy. He is the bird of happiness.