- 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 — S3E17
Episode: Meet Mondo Gecko
Air Date: 2015-05-10
Runtime: 22 min
Overview
Michelangelo and Casey become friends with Mondo Gecko, a radical, skateboarding, reptilian teenager.