- Leonardo (Cam Clarke)
- Donatello (Barry Gordon)
- Michelangelo (Townsend Coleman)
- Raphael (Rob Paulsen)
- Splinter (Peter Renaday)
- April O'Neil (Renae Jacobs)
- Irma Langinstein (Jennifer Darling)
- Burne Thompson (Pat Fraley)
- Vernon Fenwick (Peter Renaday)
- Shredder (Townsend Coleman)
- Krang (Pat Fraley)
- Bebop (Barry Gordon)
- Rocksteady (Cam Clarke)
- Dirtbag (Pat Fraley)
- Groundchuck (Bob Ridgley)
- Captain Dredd (Lloyd Sherr) (Debut)
- Kerma (Jan Rabson)
- First Hunter Drone (Townsend Coleman) (Debut)
- Second Hunter Drone (Peter Renaday) (Debut)
- Turtles' Lair
- Shell-Ri-La City
- Channel 6
- New York Harbour
- The Smash Up Bar asteroid
- Shell-Ri La sewer system
Home media releases
- Teenage Mutant Ninja Turtles Season 7
- Teenage Mutant Ninja Turtles: The Complete Classic Series Collection
- After Captain Dredd kidnapps Kerma, Raphael's "R" is colored white.
- The close-up shot of Krang in his bubble walker after Shredder's sword has been broken is colored yellow.
- Raphael mentions the time Groundchuck and Dirtbag destroyed Shell-Ri-La city's force dome but doesn't mention Dirtbag's part in it.
- Leonardo's sword doesn't make a sound when Captain Dredd breaks it with his energy blade.
- When Leonardo is battling Dredd he's seen with one sword on his belt, but it disappears after his other one breaks.
- When Captain Dredd's first ship arrives in Shell-Ri La City, the ship is seen in another shot behind the Turtles as they're running towards them.
- When Krang says that the Technodrome is running dangerously low on energy, the animation cell for the control panel that he is typing on moves slightly.
- All of the Turtles' leg bands are colored blue when they exit the Channel 6 building to greet Kerma.
- In the close-up shot of one of the Hunter Drones at the Channel 6 building before the commercial break, the Drone's head suddenly becomes bigger.
- Krang's robot hands are flesh colored instead of the usual red when the Hunter Drones tell him that the Turtles have been destroyed.
- Raphael unties one of his wristbands when fighting Groundchuck and uses it to make him charge into a wall, but the wristband is clearly still tied to his wrist and the "wristband" he removes is far bigger when unfolded than it should be.
- Kerma's teeth are coloured red after he complains about the turtle robots being destroyed by the Brute Force troops.
- Dirtbag's eye is coloured white instead of yellow when he lands on the ground after pulling Michelangelo and Raphael into the hole.
- Leonardo emerges from the hole when only Michelangelo and Raphael are seen being pulled into the hole.
- When Kerma describes Captain Dredd to the Turtles, the blade on Raphael's left sai is missing.
- Michelangelo: Come on steak-face, hit me with your best shot!
- Groundchuck: Hey, don't you make fun o' my prize-winning good looks, boy!
- Captain Dredd: (to Donatello) Do you want to be destroyed along with your friend?
- Donatello: No. I want you to drop that sword! (he presses some buttons on the gold Turtle remote, which causes Captain Dredd to lose control over his body)
- Captain Dredd: Wha?.. What the...I can't control myself!
- Donatello: Oh, don't be so hard on yourself!
- Captrain Dredd: (destroying himself) No!, No!, Noo! No. You can't do this to me! (laying in a pile) I am the great Captain...Dreeeeedd!
- Michelangelo: Face it dude, from now on your the great "Captain Mud!"
- Raphael: Let's get these creeps locked up so we can go home!