"Showdown" Part 1

Air Date
August 8th, 2013

Synopsis
After learning that the Kraang are planning an invasion, The Turtles engage in a difficult battle as they make a desperate assault on TCRI to shut down the Kraang's  before it summons the Technodrome, and in order to save April whom the Kraang managed to capture with the help of Shredder. They destroy TCRI, but not before the Technodrome comes through the portal.

Major Characters

 * Leonardo (Jason Biggs)
 * Raphael (Sean Astin)
 * Donatello (Rob Paulsen)
 * Michelangelo (Greg Cipes)
 * Splinter (Hoon Lee)
 * Shredder (Kevin Michael Richardson)
 * April O'Neil (Mae Whitman)
 * Kraang (Nolan North)
 * Kraang Prime (Roseanne Barr)

Minor Characters

 * Karai (Kelly Hu)
 * Dogpound (Clancy Brown)
 * Fishface (Christian Lanz)
 * Kirby O'Neil (Keith Silverstein)
 * Space Heroes
 * Captain Ryan (Brian Bloom)
 * Crankshaw (Scott Menville)