Mario Brassard received a bachelor's degree in French Studies from the University of Quebec at Trois-Rivi res. He has published four children's novels in French, including La saison des pluies (2011), which was awarded the TD Prize for Canadian Literature for Children, nominated for the Governor General's Award and selected for the IBBY 2012 Honor List and the White Ravens; Quand hurle la nuit (2015), a finalist for the Governor General's Award, and Ferdinand F., 81 ans, chenille (2018), which won the Governor General's Award. Who Owns the Clouds? is his first illustrated work.

GERARD DUBOIS studied graphic design at the Ecole Superieure des Arts Estienne in Paris before moving to Montreal in 1991. His 2015 children's book Enfantillages received a Special Mention from the Bologna Ragazzi. His illustration work has appeared in the New York Times (in weekly column "Gray Matter"), the Wall Street Journal, Time (in Nancy Gibbs' ongoing column), GQ, Rolling Stone, The New Yorker, the Washington Post, Le Monde, The Guardian, Entertainment Weekly, Harper's, The Atlantic and others, as well multiple Folio Society editions, and he has received multiple awards from the Society of Illustrators. His art has been exhibited in galleries around the world. In 2018, Canada Post released a stamp with his art as part of the Great Canadian Illustrators series. He currently teaches at the Universite du Quebec.