Final answer:
The four main characters from 'Teenage Mutant Ninja Turtles' are Leonardo, Donatello, Raphael, and Michaelangelo, who are named after Renaissance artists and are known for their distinct personalities and colored masks.
Step-by-step explanation:
The four main characters from the cartoon series 'Teenage Mutant Ninja Turtles' are Leonardo, Donatello, Raphael, and Michaelangelo. Each of these characters is named after a Renaissance artist and has a distinct personality and color-coded mask. Leonardo is the leader and wears a blue mask; Donatello is the inventor and tech wizard with a purple mask; Raphael is the tough one with a red mask; and Michaelangelo is the fun-loving turtle with an orange mask. These reptilian heroes have become iconic in popular culture, fighting crime from the sewers of New York City and showcasing the virtues of teamwork and martial arts skills.