Since 1985, Juan has been an illustrator/designer for Disney and Warner Bros. and has penciled covers for DC Comics’ Looney Tunes and Tiny Toons magazines. He is also the publisher of his own comic book series, Silver Comics, seen in the Disney/Dreamworks release I Am Number Four (produced by Steven Spielberg) as well as The Skull Army, a macabre/detective pulp, featuring his creation (named)The End.