Jorge Blanco Director Dwayne Johnson Chuck Voice Jessica Biel Neera Voice Justin Long Lem Voice Gary Oldman Gen. Grawl Voice Seann William Scott Skiff Voice John Cleese Professor Kipple Voice Alan Marriott Glar Voice Freddie Benedict Eckle Voice Javier Abad Co-Director Marcos Martínez Co-Director Joe Stillman Screenwriter Juan Antonio Perez Ramirez Executive Producer Peter D. Graves Executive Producer Michael Ryan Executive Producer Jose A. Rodriguez Diaz Executive Producer Javier Perez Dolset Executive Producer Albie Hecht Executive Producer Patrick Meehan Executive Producer Mercedes Gamero Executive Producer Mercedes Rey Executive Producer Stephen Margolis Executive Producer Ricardo García Arrojo Executive Producer Albert Martinez Martin Executive Producer Ignacio Perez Dolcet Producer Guy Collins Producer Alex Rodríguez Film Editing James Brett Original Music Julian Romero Production Design Fernando Juarez Art Director Ruth Lambert Casting Karen Lindsay-Stewart Casting