The Teenage Mutant Ninja Turtles are four genetically mutated turtles called Leonardo, Donatello, Raphael and Michelangelo. they live in the sewers of New York City and are trained in the art of Ninjitsu by their Rat Sensei, Master Splinter. Using their skills they fight crime in the city against petty criminals, gangsters, mutated creatures and aliens, with the help of their friends April O'Neil and Casey Jones. They first appeared in a Comic Book in 1984 and since then have starred in three television shows and six feature length films. Most recently in 2014 and 2016.