Starring Leonardo, Donatello, Michaelangelo and Raphael, there are 40 shell-kicking episodes in season 4 - 39 of which are available on DVD for the first-time together in this five-disc DVD box set, complete with special features for the first time as well as limited time, collectible 3D plastic-molded packaging modeled after the turtles themselves! Teenage Mutant Ninja Turtles Season 4 is now available.