The good guys in the fight against crime includes Leonardo, Raphael, Donatello, Michaelangelo, Splinter, and April O' Neil.

While the four Ninja Turtle do most of the fighing, both April and Splinter have played a major role in the fight against crime. Splinter does modt of the teaching. He is like a dad to all four of the ninja turtles. April provides the turtles with the tools that are required to fight crime.

These six individuals are closly tied and they need eachother in order to keep Shredder and Krang from wrecking the world. If it was not for all of them working together the world would be overtaken by evil, and we would all be doomed.