4K Half-Shell Heroes: Blast to the Past (2015) online Year: 2015 Country: USA Director:Glen Murakami Stars: Seth Green, Sean Astin, Greg Cipes Stars: Seth Green, Sean Astin, Greg Cipes Genre: Animation / Adventure / Action A TMNT one hour TV special based on the Half Shell Heroes toy-line. The turtles get snapped back into the past and must find their way through the pre-historic dinosaurs and triceratons in order to get back home. Watch Half-Shell Heroes: Blast to the Past (2015) online