For fans by fans: Lifelong “Teenage Mutant Ninja Turtles” fans Seth Rogen and director Jeff Rowe talk about their vision for “Mutant Mayhem”

Teenage Mutant Ninja Turtles made a big impression on Seth Rogen at a very early age. “The animated series came out in 1987, when I was five. The first movie came out in 1990, when I was eight,” he says. “It was perfectly geared toward someone my age and I loved it. They were funny. They were referential. I started taking karate probably because of the Turtles. I was just kind of obsessed.”