Ninja

A Ninja is one who trains in the art of Ninjutsu.

Ninjas in the TMNT Universe

 * Leonardo
 * Donatello
 * Raphael
 * Michelangelo
 * Splinter
 * Oroku Saki
 * Oroku Nagi
 * Karai
 * Tatsu
 * Dark Ninja Assassins
 * Punk Frogs
 * Khan
 * Hamato Yoshi
 * Foot Ninja
 * Foot Tech Ninja
 * Foot Sumo Ninja
 * Foot Elite
 * Chien Khan
 * Ninjara
 * Guardians
 * Tall Karai aide
 * Short Karai aide
 * Ancient One
 * Yukio Mashimi
 * April O'Neil in Archie Comics, 2003 TV series and TMNT (2007 film)