Adam Rex is an American illustrator and author of children's books living in Tucson, Arizona. He has contributed illustrations to Magic: The Gatheringand other fantasy art and has illustrated several children's books. Adam has noted that his history with fantasy drawings initially hurt his entry into children's books. His first books, Tree-Ring Circus and Frankenstein Makes a Sandwich, were published in 2006. Frankenstein Makes a Sandwich went on to become a New York Times best seller. Another picture book Pssst! and the illustrated novel The True Meaning of Smekday were published in 2007. In June 2012, Dreamworks Animation announced that they had cast Rihanna and Jim Parsons as voice actors for Happy Smekday!, an animated screen adaptation of The True Meaning of Smekday, planned for theatrical release in late 2014.