Teenage Mutant Ninja Turtles (2003), Season 3

It all started with four pet turtles and a canister of alien ooze. When the turtles were accidentally bathed in the strange glowing green slime, they began to grow. To change. To mutate! Raised in the sewers of New York City by their wise sensei, Master Splinter, a rat, the four mutant turtles were schooled in the ancient martial art of Ninjitsu, mastering skills of stealth, weapons and fighting. Leonardo! Raphael! Michelangelo! Donatello! Splinter forged these four teenage turtles into one supreme green fightin' machine: the Teenage Mutant Ninja Turtles!