Teenage Mutant Ninja Turtles is an American animated television series, mainly set in New York City. It first aired on February 8, 2003 and ended on February 28, 2009. The series marked the revival of the franchise as a Saturday morning cartoon on Fox's Fox Box programming block (later known as 4Kids TV) The TMNT 2003 TV series was produced by 4Kids Entertainment, and Mirage Studios, which each owned half of the rights to the show, and animated by Dong Woo Animation. Reruns ran on Cartoon Network's Miguzi block in 2004. The series migrated to The CW4Kids in its final season after 4Kids's contract with Fox ended. However, all episodes aired on the Canadian channel Teletoon under the Kapow block. Nickelodeon now owns the rights to this and any future Turtles series.
In the 2003 TV series, the four Turtles' personalities are in some ways different from the 1987 TV series in an attempt to follow the Mirage Comics versions of the characters more closely. All characters are more complex individuals, and the Turtles have a stronger family bond. The tone is also somewhat more serious with an emphasis on action. The show does not feature nearly as much slapstick comedy or heavy puns as its animated predecessor. The 2003 series also features mystic power. Leonardo and Raphael often make fights, Michelangelo is now very obsessed of being cool, and Donatello seems to study his inventions more closely.
The series covers a large scope of the Turtles' adventures taking them from the sewers, to the streets of New York City, to the woodlands of rural New England, to outer space, alternate dimensions, to the future, and ultimately home once more. The first several seasons focus on the Turtles' battles against The Shredder and The Foot as well as the Purple Dragons, while the later seasons branch out to include other antagonists