Seasons & episodes
S4 · E14Son of Return of the Fly II 1990-09-15 · 22 min
Vengeful Baxter Stockman and an A.I. computer return to Earth from a dimentional limbo and capture the Turtles while luring Shredder into their trap as well.
S4 · E15Raphael Knocks 'em Dead 1990-09-15 · 22 min
Raphael must contend with a mobster named Pinky McFingers when he is kidnapped from a local comedy club.
S4 · E16Bebop and Rocksteady Conquer the Universe 1990-09-22 · 22 min
On their latest trip to Earth, Bebop and Rocksteady steal a machine that makes everyone scared of everything.
S4 · E17Raphael Meets His Match 1990-09-22 · 22 min
Raphael wins a ticket to a costume party on MacDonald Crump's yacht and decides to go disguised as a Teenage Mutant Ninja Turtle.
S4 · E18Slash the Evil Turtle from Dimension X 1990-09-29 · 22 min
Bebop and Rocksteady use Krang's new Mutagen on Bebop's pet turtle Slash so he can do their housework for them. Slash runs away and is conned by an irritated entrepreneur into framing the TMNT.
S4 · E19Leonardo Lightens Up 1990-09-29 · 22 min
A ray-gun makes Leonardo carefree and ignore his responsibilities. This leaves the Turtles defenseless and the city at the mercy of Maestro G Clef, a villain who destroys the city with music.
S4 · E20Were-Rats from Channel 6 1990-10-13 · 22 min
After many failed attempts from his rodent subjects to find food, the Rat King learns of an abandoned canister of mutagen lost in the sewers and claims it for himself.
S4 · E21Funny, They Shrunk Michaelangelo 1990-10-13 · 22 min
While Michaelangelo is testing out a sailboard in the sewers he accidentally gets swept out into the city harbor.
S4 · E22The Big Zipp Attack 1990-10-20 · 22 min
Krang sends Shredder, Bebop and Rocksteady to find Rigidium to repair the Technodrome. A meteorite lands containing a large egg. The egg hatches, revealing a Zipp, a cute little creature that begins to eat the Technodrome.
S4 · E23Donatello Makes Time 1990-10-20 · 22 min
Professor Lloyd Cycloyd, a crazy scientist who escaped from an institution, accidentally discovers the Turtles' lair. He sees Donatello testing out one of his new inventions, a time stopper.
S4 · E24Farewell, Lotus Blossum 1990-10-27 · 22 min
While on their way to a movie, the Turtles rescue the Urn of Chakahachi from two thieves. The thieves pry off a pearl from the Urn before the Turtles get their hands on it.
S4 · E25Rebel Without a Fin 1990-10-27 · 22 min
Dr. Polidorius creates a half-man half-fish named Ray. The Doctor has Ray plant explosives in certain parts of the sewer so that he can sink the city beneath the ocean.
S4 · E26Rhino-Man 1990-11-03 · 22 min
J. Gordon Hungerdunger, a Texas millionaire, is holding a best super-hero contest. The winner of the contest will receive the humongous Malaprop Diamond.
S4 · E27Michaelangelo Meets Bugman 1990-11-03 · 22 min
Michaelangelo meets his favourite comic book hero after he saves a weakened Brick Bradley in the sewers, and then he and Bugman take on the evil Electrozapper together.
S4 · E28Poor Little Rich Turtle 1990-11-10 · 22 min
Krang has come up with yet another brilliant plan to free the Technodrome. The evil alien sends Bebop and Rocksteady to kidnap Buffy Shellhammer, 15 year-old CEO of Shellhammer Chemicals.
S4 · E29What's Michaelangelo Good For? 1990-11-10 · 23 min
The Turtles go along with Michaelangelo and his pet pigeon to the zoo so that Dr. Goodfellow can check the bird out.
S4 · E30The Dimension X Story 1990-09-08 · 23 min
Disguised as humans, Rocksteady and Bebop are sent to attach special trans-dimensional thrusters to the Channel Six Building.
S4 · E31Donatello's Degree 1990-09-08 · 23 min
Donatello gets an invitation to accept his degree personally from Professor Sopho at Sopho University. The only problem is that the invitation is addressed to a Miss Donna Tello.
S4 · E32The Big Cufflink Caper 1990-09-14 · 23 min
The Turtles, bored at the lack of action, decide to investigate when they hear that cufflinks are being stolen around the city.
S4 · E33Leonardo VS Tempestra 1990-11-17 · 23 min
The Turtles sneak into an arcade in the middle of the night to play video games. Leonardo gets hooked on a game called Tempestra's Revenge.
S4 · E34Splinter Vanishes 1990-11-24 · 23 min
Returning from another mission, the Turtles are shocked to discover their mentor has left the lair, leaving behind only a video taped message.
S4 · E35Raphael Drives 'Em Wild 1990-11-24 · 23 min
On his way home from getting pizza Raphael and a cab driver accidentally get exposed to rays from a Personality Transmogrifier.
S4 · E36Beyond the Donatello Nebula 1990-12-01 · 23 min
Donatello has created a device to communicate with distant galaxies. While trying to communicate with the Turtle Nebula Donatello accidentally brings a spaceship to Earth.
S4 · E37Big Bug Blunder 1990-12-01 · 23 min
A fly lands in the mutagen and it increases in size. Not being able to control it, Bebop and Rocksteady send the giant insect to Earth.