Shredder is Defeated.
The Teenage Mutant Ninja Turtles was the most popular television show among children all over the world when it was at its peak. Cartoons from the 1980s and 1990s played an important role in the rise to fame and prosperity of the characters.
Although it is crucial to remember that the show was created with children in mind, they did have their own comic book for a period of time before that was more aimed toward adults. The conflict between the turtles and Shredder is presented brutally in the first issue of the series.