"I, Monster"

Air Date
January 25th, 2013

Synopsis
The Turtles must save the city and Splinter's mind from Dr. Victor Falco, who is now the terrifying Rat King.

Major Characters

 * Dr. Falco / Rat King (Jeffrey Combs)
 * Leonardo (Jason Biggs)
 * Raphael (Sean Astin)
 * Donatello (Rob Paulsen)
 * Michelangelo (Greg Cipes)
 * Splinter (Hoon Lee)

Minor Characters

 * April O'Neil (Mae Whitman)
 * Carlos Chang O'Brien Gambe / Cop (Jim Meskimen)