The Teenage Mutant Ninja Turtles are named Leonardo, Raphael, Donatello and Michelangelo. The characters are named after famous artists because their creators, Peter Laird and Kevin Eastman, are both fans of art history, especially the Renaissance.
The Teenage Mutant Ninja Turtles first appeared in a comic book in 1984, and then the characters appeared in a cartoon series that ran from 1987 through 1996. A second television series premiered in 2003 and ran until 2009. Nickelodeon began airing a third series in 2012.
The first live action "Teenage Mutant Ninja Turtles" film was released in 1990, and sequels premiered in 1991 and 1993. The latest movie, which was produced by Michael Bay, premiered in 2014.