This week, a toyline we don't need to introduce: the Teenage Mutant Ninja Turtles. The heroes in a half-shell have enjoyed countless revivals, redefinitions, and reissues over the decades since they debuted in the 80s, so for our first foray into the mutant-filled sewers of Manhattan, we discuss the early years of the original Playmates toyline, the origins of the turtles themselves, and our time living through the TMNT-obsessed 90s.