Thanks to a malfunction in Donatello's ""Healthometer,"" an invention designed to diagnose one's health, Raphael is convinced that he is not long for this world. Raph decides to make the world a better place with what little time he has left. Meanwhile, Burne Thompson has assigned Vernon to cover the eruption of a volcano on the Island of Poppalua and April to cover the dedication of a new species of lily at the local Flower Society Club. Raphael, disguised in a Musketeer costume and calling himself ""The Green Defender"", risks his life by stopping crime all over the City. The ""terminal"" terrapin even rescues a cat off of a ledge of a high-rise apartment building. Back at the Turtles' Lair, Donatello repairs the ""Healthometer"" and searches for Raphael to tell him that he is okay and that the invention was broken, only to discover Raph's farewell note. The Turtles join April and scour The City for Raphael/The Green Defender. Meanwhile, a Professor Wilhelm Vanilli is angry that LaVerne Fors
Elenco: Cam Clarke , Barry Gordon , Townsend Coleman , Michael Gough , Pat Fraley , Tony Jay , Bill Martin , James Avery .