"Enemy of My Enemy"

Air Date
April 12th, 2013

Synopsis
When a Kraang invasion scheme threatens to destroy the Turtles and put the whole world in danger, Karai offers an alliance with the Turtles. After declining Karai's, the Turtles eventually decide that teaming up with Karai might be a good idea when Karai mentions weapons that are being shipped to the Shredder that she could steal. However, when the Turtles plan on destroying the Shredder once and for all, Karai's loyalty to the Turtles vanishes and now the Turtles must deal with Shredder and Karai as well as the Kraang.

Major Characters

 * Leonardo (Jason Biggs)
 * Raphael (Sean Astin)
 * Donatello (Rob Paulsen)
 * Michelangelo (Greg Cipes)
 * Shredder (Kevin Michael Richardson)
 * Karai (Kelly Hu)
 * Kraang (Nolan North)

Minor Characters

 * Splinter (Hoon Lee)
 * April O'Neil (Mae Whitman)
 * Ivan Steranko (Fred Tatasciore)