Star Wars' Mark Hamill Guest Stars On Transformers Rescue Bots

star Mark Hamill and iconic voice actor Peter Cullen will both guest star on an upcoming episode of Transformers Rescue Bots titled "What Lies Beneath." Mark Hamill will play Uncle Woodrow Burns while Peter Cullen reprises his role as Optimus Prime. In "What Lies Beneath," Cody's Uncle Woodrow pays a visit and is determined to find proof that aliens exist beneath the earth's surface. His findings result in the entire Rescue Team, along with Optimus Prime, going on a mission to save Woodrow and Cody and search for a resource that is vital to the Rescue Bots' survival. Transformers Rescue Bots, "What Lies Beneath," airs Saturday, April 26 at 1:30 p.m. ET on the Hub Network.