Doogie Horner is an novelist, comedian, and illustrator. A Die Hard Christmas, Some Very Fascinating Cats Possibly You Weren't Aware Of, and 100 Ghosts are among his past works. JJ Harrison is the illustrator of A Die Hard Christmas, a best-selling picture book, as well as other picture books, comics, and posters. Despite having little regard for his own work, it is displayed in some of the world's most prestigious art galleries, and he has the luxury of collaborating with some of the industry's most prestigious publishing houses. He enjoys skateboarding, eating cereal, and playing with dogs when he is not sketching.