<Li> Paul Giamatti as Limbo A comical orangutan who works in the trade business of human slaves . Limbo is caught in the conflict between humans and apes and tries his best to simply survive . Giamatti drew inspiration from W.C. Fields for his performance . While his prosthetic makeup was being applied, Giamatti watched episodes of Ultraman and various Japanese Godzilla films . </Li> <Li> Jonah (uncredited) as Pericles A chimp student trained by Leo at the US Air Force space station training other chimps and orangutans to fly space pods . He is launched on a mission that involves traveling through an electromagnetic storm . He appears in only a few scenes, interacting mainly with Leo and in the ending scene with Ari . </Li> <P> Small roles include David Warner (Senator Sandar), Lisa Marie (Nova), Erick Avari (Tival), Luke Eberl (Birn), Evan Parke (Gunnar), Glenn Shadix (Senator Nado), Freda Foh Shen (Bon), Chris Ellis (Lt. Gen. Karl Vasich) and Anne Ramsay (Lt. Col. Grace Alexander). </P> <P> There are also cameo appearances by Charlton Heston (uncredited) as Zaius, Thade's father, and Linda Harrison (the woman in the cart). Both participated in two original films in the series, Planet of the Apes (1968) and Beneath the Planet of the Apes (1970) as George Taylor and Nova, respectively . </P>

Who plays the senator in planet of the apes