George Miller Director Elijah Wood Mumble Voice Robin Williams Ramon, Lovelace Voice Brittany Murphy Gloria Voice Hugh Jackman Memphis Voice Nicole Kidman Norma Jean Voice Hugo Weaving Hugo Voice Anthony LaPaglia Boss Skua Voice E.G. Daily Baby Mumble Voice Magda Szubanski Miss Viola Voice Miriam Margolyes Mrs. Astrakhan Voice Carlos Alazraqui Nestor Voice Michael Cornacchia Skua Bird Voice Steve Irwin Trev Voice Jeff Garcia Rinaldo Voice Lombardo Boyar Raul Voice Johnny Sanchez Lombardo Actor Warren Coleman Screenwriter John Collee Screenwriter Judy Morris Screenwriter George Miller Screenwriter Doug Mitchell Producer Bill Miller Producer Bruce Berman Executive Producer Graham Burke Executive Producer Dana Goldberg Executive Producer Zareh Nalbandian Executive Producer Edward Jones Executive Producer Christian Gazal Film Editing Margaret Sixel Film Editing John Powell Original Music Mark Sexton Production Design Simon Whiteley Art Director David Nelson Art Director Jean-Pascal Leblanc Set Decoration Kristy Carlson Casting