The Complete History of Teenage Mutant Ninja Turtles - Mental Floss

Teenage Mutant Ninja Turtles had to soften up for the younger set

The original Mirage comic book really wasn’t made for youngsters. The Turtles diced up enemies while spouting the occasional curse word, and one of the Turtles’ allies was hockey mask-wearing vigilante Casey Jones, who beat down even low-level crooks with baseball bats and hockey sticks.