Green, along with "Robot Chicken" co-producer Breckin Meyer, appeared in the NBC show "Heroes" during the 2008–09 season. In January 2009, Green worked with David Faustino (Bud Bundy from "Married... with Children") for an episode of Faustino's show "Star-ving" – Faustino is often mistaken for Green. Later in the same year, he worked with one of his idols, Robin Williams in comedy film "Old Dogs", which also starred John Travolta. On July 13, World Wrestling Entertainment's official website announced Green as the special guest host for the July 13 episode of "WWE Raw", and on that night, Green competed in the main event, a six-man tag team match, which his team won by disqualification. He was also in attendance for WWE's biggest event of the year, WrestleMania XXVI on March 28, 2010. Green guest-starred in the third season of the acclaimed sitcom "Husbands". Green became the new voice of Leonardo in "Teenage Mutant Ninja Turtles" beginning in its third season (following Jason Biggs' departure from the role).