Naray Yoon is a Korean illustrator who studied graphic design at Sangmyung University. She worked as a graphic designer before becoming a full-time illustrator in 2013. Naray lives in Seoul with her daughter and husband. She has illustrated Giant Dinosaurs and Brilliant Body in the First Facts and Flaps series for Campbell.
Kristina Routh is a qualified medical doctor, who has held positions as a Clinical Senior Lecturer and Specialist Registrar in Public Health. She now works as a medical writer, editor and consultant on both books for children and health information publications. Brilliant Body is her first book for Campbell Books.