Teenagers from Dimension X

Teenagers From Dimension X is the eleventh episode of the second season (1988) of the 1987 Teenage Mutant Ninja Turtles cartoon series. It was written by Micahel Reaves. It originally aired on December 10, 1988. It is available on Volume 2 DVD box set.

Plot
The Neutrinos return from Dimension X in order to warn the Turtles of Shredder and Krang's latest plot to take over the world. The Turtles find the Neutrinos after seeing them on the TV news. However, before they can lead them to safety, Rocksteady and Bebop capture them.

After the Turtles return to their lair, Donatello unveils his latest invention, the Cheapskate, a motorized skateboard. They attempt a rescue mission of the Neutrinos in Shredder's amusement park hideout. They are success and take the Neutrinos back to the lair.

The Neutrinos explain Krang/Shredder's plan to turn them into mindless zombies and how they can neutralize the Mental Neurolizer with a flip of the switch on their dashboard. However, the crystal that powers their Star Mobile is cracked and can only be replaced by a crystal from Dimension X. Krang is able to locate them, and he contacts Shredder with the exact location of the Neutrinos and the Turtles.

Shortly after the crystal is repaired, Shredder, Rocksteady and Bebop are able to steal the Star Mobile (with the crystal) and capture the Turtles, leaving the unconscious Neutrinos to be recovered by April O'Neil moments later, thanks to a distress signal from one of the Turtle's TurtleComs that was accidentally triggered during the attack from Shredder and Company.

Shredder takes the Turtles to an abandoned wrecking yard, throws them into the Mental Neurolizer, and pushes a button on the dashboard that should open the Portal to Dimension X. But something is wrong! Shredder pushed the wrong button and is "frozen" in his seat! The Turtles use this opportunity to escape from the "ties that bind them" and attack Rocksteady and Bebop, who are no match for the Turtles. Rocksteady and Bebop retreat with Shredder as, once again, they are shown the "errors of their ways."

Character voices

 * Leonardo (Cam Clarke)
 * Donatello (Barry Gordon)
 * michelangelo(Townsend Coleman)
 * Raphael (Rob Paulsen)
 * Splinter (Peter Renaday)
 * April O'Neil (Renae Jacobs)
 * Dask (Thom Pinto)
 * Zak (Pat Fraley)
 * Kala (Tress MacNeille)
 * Shredder (James Avery)
 * Bebop (Barry Gordon)
 * Rocksteady (Cam Clarke)
 * Krang (Pat Fraley)
 * First Cyber Punk
 * Second Cyber Punk
 * Security Droid

Trivia

 * Debut of the Cheapskates

Vehicles

 * Cheapskates
 * Channel 6 Newsvan
 * Neutrino Starcruiser
 * Turtle Blimp
 * Shredder's Cheese Van

Locations

 * Turtles' Lair
 * Abandoned Fun Fair
 * Technodrome
 * Dimension X
 * Channel 6
 * Particle Accelerator Plant
 * Cyber Punk Area

Gadgets

 * Turtlecoms
 * Mento-Neutraliser

Quotes

 * Robot: Halt! Identify yourselves!
 * Shredder: Certainly! (to Bebop) Identify us Bebop! (Bebop whips out his stun laser and destroys the robot)

Errors

 * Donatello is missing his colours when he disarms Rocksteady. He is also seen holding Bebop's blaster instead of his own.
 * When the ropes around the Turtles are accidentally cut with Bebop and Rocksteady's laser fire, Donatello is seen with Michelangelo's colours.
 * When Leonardo asked the Neutrinos what Shredder is up to, he was seen with Raphael's colours.
 * Raphael speaks with Donatello's voice when he disarms Bebop and his mouth doesn't move.
 * The letters on the Turtles' belts change from white to grey and back throughout the episode.
 * Krang's android's hands are coloured red when he opens the portal, but the android's hands would not turn red permanently until Season 3.
 * The Cheapskate that Donatello is riding on is missing it's rear rotor blade when he introduces it to the others.
 * When the Turtles first ride the Cheapskates, part of Raphael's mask is coloured green after Michelangelo douses him with water.
 * The Neutrinos do not recognise April despite meeting her in their first visit to Earth.
 * The colours on the Turtles' shell markings are switched in some parts of the episode.
 * Vernon's braces/suspenders are missing when Burne tells him to go and cover the Neutrinos when they were buzzing the Channel 6 building.
 * Donatello's bo wasn't coloured in after Zak found out that their trylithiam crystal was cracked.
 * Rocksteady's bandolier was missing when he, Bebop and Shredder bumped into the robot guard in the elevator.
 * When Shredder told Bebop to "identify themselves" he pointed to Rocksteady instead.