Teenage Mutant Ninja Turtles is adding Mark Hamill and he has shown us his new look. Mark Hamill will be voicing Kavaxas. Kavaxas is Demodragon of the Underworld. Demodragon of the Underworld has been created for the TMNT on Nickelodeon and will live upto his name as he has reptilian skin, facial features and wings.
Starring Seth Green, Sean Astin, Nolan North and more, Teenage Mutant Ninja Turtles airs Sundays at 11 am EST on Nickelodeon.