Kyle Sullivan is an award-winning children's book author whose titles have sold more than a half million copies worldwide. Kyle writes middle-grade chapter books, picture books, and board books that appeal to parents, guardians, teachers, and librarians just as much as the young readers in their lives. His titles include the board book Goodnight Krampus, the picture books Hazel and the Spooky Season and Werewolf? There Wolf!, and the middle-grade chapter books Krampus Confidential and Hobgoblin and the Seven Stinkers of Rancidia, which was named a Kirkus Best Book of 2019 and received a Foreword INDIES Book of the Year Award. Kyle has an MA in English Literature from the University of British Columbia and a BA in Creative Writing from the University of Washington. He lives in Portland, Oregon.

Zoe Persico is an author and illustrator with a love for the wild, the wondrous, and the whimsical. She has illustrated the best-selling Hazy Dell Flap Books, Mothman Baby! and Krampus Baby!, and her debut middle grade graphic novel, How to Talk to Your Succulent, publishes in 2025 with Tundra Books. When she's not working, she enjoys playing board games, imagining in tabletop RPGs, admiring a passing thunderstorm, hovering the kitchen in pickleball, hunting for good finds at the thrift store, and petting her dog, Zombie.

★ 2025 Northern Lights Book Awards Best Picture Book of 2025
★ 2025 Moonbeam Award Winner (Best Holiday Book, Gold)
★ 2025 Dad Suggests Books Best Holiday Picture Books

"This cheerful, rhyming tale starring some of Western Europe's folkloric figures will thrill readers...Sullivan and Persico make these friendly monsters heartwarming; readers will enjoy welcoming them to their holiday story times."
--School Library Journal