Trivia: Although the franchise went by the name "Teenage Mutant Hero Turtles" in the UK, this film retained the international "Ninja Turtles" title, as it helped differentiate it as a little less focused on young child audiences than the cartoon and toy line. Oddly, the film's theme song was still re-recorded to reference "Hero Turtles," perhaps to explicitly tie the film together with the larger franchise and clarify that the "hero" and "ninja" turtles were one and the same.
Trivia: At one point in the movie Shredder scolds Tatsu, and right after that, Tatsu curses saying, "kuso." That's about the equivalent of saying sh*t in Japanese.
Trivia: The four actors playing the Turtles also had cameo appearances in the movie without their costumes: Tilden (Donatello) was the Foot messenger that says "We've been looking for you, Miss O'Neil". Pais (Raphael) is the passenger in the taxi cab that says "What the heck was that?" Sisti (Michelangelo) is the pizza delivery man that can't find the Turtle's address. Foreman (Leonardo) plays a gang member in the warehouse when Casey Jones defeats Tatsu.