Teenage Mutant Ninja Turtles (1987)

Four turtles tumble into the sewers of New York City, where they encounter Hamato Yoshi, a Japanese man living in exile. After being exposed to a mysterious green ooze, the turtles undergo a transformation into anthropomorphic ninjas. Yoshi, now Master Splinter, becomes a wise rat and trains them in the art of ninjutsu. Alongside intrepid reporter April O'Neil, they confront their nemesis, Shredder, and his formidable ally, Krang, an alien warlord from Dimension X. Together, they fight to protect their city from evil threats, blending humor, action, and camaraderie.