John Rocco

Two companion books to the Percy Jackson series were published in 2014 and 2015, with lavish interior illustrations by Rocco, Percy Jackson's Greek Gods and Percy Jackson's Greek Heroes. Regarding the first Kirkus Reviews observed in a starred review, "Riordan has a sure touch when it comes to fitting much into a small space—as does Rocco’s artwork, which smokes and writhes on the page as if hit by lightning ...". John Rocco spent 18 months as animation director at ImagineAsia in Manila, Philippines. Rocco worked on and oversaw several projects while there involving CGI animation, motion capture, and story development.

Rocco was a runner-up for the American Library Association Caldecott Medal, which annually recognizes the best in U.S. children's picture book illustration, when Blackout was named a Caldecott Honor Book in 2012.

Another artist illustrated the first edition dustjacket for at least the first Camp Half-Blood novel by Rick Riordan, namely The Lightning Thief. Before the end of the Percy Jackson & the Olympians subseries (2005 to 2009), all volumes were in print with stylistically matching dustjackets illustrated by Rocco. New cover illustrations from a single Rocco painting that spans all five books were introduced early in 2014.

Christopher John Rocco (born July 9, 1967), simply known as John Rocco is an American illustrator of book covers and children's books. He is best known for illustrating the covers of books in the Percy Jackson & the Olympians series. He is the sole creator of some children's picture books.