Tuutikki Tolonen is the author of several acclaimed children's books, plays and academic articles. For Monster Nanny she received the Arvid Lydecken prize. She teaches creative writing and has worked as an editor and reporter at Vinski, Finland's only literary journal for children. Her inspiration for Monster Nanny was sparked during a family breakfast. She says, 'My son Leo, then six, said to me: "I heard on the radio yesterday that all mums have to go on vacation and monsters will take their places."

Pasi Pitkanen has illustrated several books for children. He lives in Helsinki, Finland.