|“Beyond the Donatello Nebula”|
|Teenage Mutant Ninja Turtles (1987) episode|
|Original airdate||December 1, 1990|
|Written by||Dennis O'Flaherty|
"Beyond the Donatello Nebula" is an episode of the fourth season of the 1987 Teenage Mutant Ninja Turtles cartoon series.
Donatello meets an alien named Algenon after trying to make contact with alien life.
Meanwhile, Hiram Grelch, an evil businessman, is vying to take over Channel 6 and sends his goons to kidnap April.
- Leonardo (Cam Clarke)
- Donatello (Barry Gordon)
- Raphael (Rob Paulsen)
- Michelangelo (Townsend Coleman)
- Splinter (Peter Renaday)
- April O'Neil (Renae Jacobs)
- Vernon Fenwick (Peter Renaday)
- Algernon (Gregg Berger)
- Hiram Grelch (Gregg Berger)
- Cab Driver (Townsend Coleman)
- Fat Grelch Goon (Rob Paulsen)
- Thin Grelch Goon (Townsend Coleman)
- First Card Player (Cam Clarke)
- Second Card Player (Peter Renaday)
- Clam's Clunkers Cowboy (Cam Clarke)
Home media releases
- Teenage Mutant Ninja Turtles: Beyond the Donatello Nebula
- Teenage Mutant Ninja Turtles Season 4
- Teenage Mutant Ninja Turtles: The Complete Classic Series Collection
- When Donatello tells Algy to destroy Grelch's forcefield, he fully becomes Michelangelo.
- Immediately after Donatello becomes Michelangelo, when the other Turtles pull up to the force field-covered tower building in the Turtle Van, the circular turtle shell on the front of the van that normally says "TURTLES" reads "UTLE."
- After Michelangelo runs from the cops wearing a dog mask, Donatello is seen in the Turtle Van, but he's not with the Turtles.
- When Leonardo unties April with his katana, he fully becomes Donatello, who's not even in this scene. However, Donatello is still seen with Leonardo's katana.
- Part of the Channel 6 news desk disappears when Grelch's goons back April and Vernon up against the wall.
- The '6' on the Channel 6 building's logo is coloured yellow instead of red when Donatello and Algy look over to Grelch's penthouse.
- When Donatello introduces Algy to the Turtles, the ties on his belt are missing.
- Michelangelo's right wrist band is purple when he takes a mask out of the Turtle Van drawer.