Included in School Library Journal's "Best of 2016" list.
"Clever and fun!" —Raina Telgemeier, author of Smile
"Hip, hip, hooray for Hippopotomister!" —Lauren Castillo, author of Nana in the City
"Delightfully sweet. Three cheers for Hippopotamister!" —Jennifer & Matthew Holm, co-creators of Babymouse & Squish
"At it's core, Hippopotomister is a touching friendship tale in the tradition of Frog and Toad and Robot Dreams. But this book will also serve as the perfect roadway for those kids looking for a path from picture books to graphic novels." —Nick Bruel, creator of the Bad Kitty series
"Green’s (Teen Boat!) characters burst with personality, his comedic sense shines, and his visual storytelling skills are solid." —Publishers Weekly, starred review
"A charming book with a solid message about changing one's life through hard work, imagination, and openness to new experiences." —Kirkus Reviews
"A fun and engaging selection for readers just venturing into graphic novels." —School Library Journal