List of Teenage Mutant Ninja Turtles (2003 TV series) episodes

Teenage Mutant Ninja Turtles’ first season originally aired between February 8, 2003 and November 1, 2003, beginning with the “Things Change” episode. The episodes were released in two separate volumes, the first on May 22, 2007 with twelve episodes, and the second on September 18, 2007 with fourteen episodes.

https://en.wikipedia.org/wiki/List_of_Teenage_Mutant_Ninja_Turtles_(2003_TV_series)_episodes