- Leonardo (Cam Clarke)
- Donatello (Barry Gordon)
- Michaelangelo (Townsend Coleman)
- Raphael (Rob Paulsen)
- April O'Neil (Renae Jacobs)
- Vernon Fenwick (Peter Renaday)
- Irma Langinstein (Jennifer Darling)
- Burne Thompson (Pat Fraley)
- Skaarg (Pat Fraley)
- Dementor (Tony Jay)
- Hungry Dimension X Alien (Pat Fraley)
- First Dregma Brother (Townsend Coleman)
- Second Dremga Brother (Cam Clarke)
- First Dimension X Prison Guard (Barry Gordon)
- Second Dimension X Prison Guard (Peter Renaday)
- Third Dimension X Prison Guard (Barry Gordon)
- Exercise Prison Guard (Barry Gordon)
Home media releases
- Teenage Mutant Ninja Turtles: Convicts from Dimension X
- Teenage Mutant Ninja Turtles Season 7
- Teenage Mutant Ninja Turtles: The Complete Classic Series Collection
- When Leonardo asks what's wrong with the early warning system, he is seen with Raphael's colours.
- After April runs for the news van after the Turtles' fight with the convicts, Leonardo speaks in Raphael's voice.
- One of Raphel's sais gets melted during a fight in the lair, but he suddenly has it again moments later.
- When Leonardo, Michelangelo and Raphael are running away from Skarg and Dementor's Attack Vehicle, the three of them can be seen levitating in mid air as they run down the street.