- Seth Green (Leonardo (voice))
- Rob Paulsen (Donatello (voice))
- Sean Astin (Raphael (voice))
- Greg Cipes (Michelangelo (voice))
- Mae Whitman (April (voice))
- Josh Peck (Casey Jones (voice))
- Kelly Hu (Karai)
- Gwendoline Yeo (Shinigami)
Teenage Mutant Ninja Turtles — S3E21
Episode: Attack of the Mega Shredder!
Air Date: 2015-08-16
Runtime: 22 min
Overview
Leonardo decides to sneak into Shredder's lair alone, and winds up facing the biggest mutant threat yet.