Season 4
39 episodes · Sep 10, 1990
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S4E1Plan Six From Outer Space
Sep 10, 199022mWith the Technodrome in serious need for new equipment, Bebop and Rocksteady are sent to Earth, disguised in human form, to capture the Channel 6 building and return it to Dimension X.
S4E2Turtles of the Jungle
Sep 11, 199022mA professor's new ray-gun causes plants to go wild and his pet ape Jocko to become a giant rampaging monkey. By using the same ray-gun, Donatello is increased to Jocko's size so he can fight the giant ape and save April from him.
S4E3Michaelangelo Toys Around
Sep 12, 199022mWhile trying to see the new toys at the Toy Fair, Michaelangelo stumbles upon a plot to take over a noted toy company.
S4E4Peking Turtle
Sep 13, 199022mThe Turtles must battle a reanimated Terracotta Army after Shredder steals an energy device shaped like a giant pearl, which is held and guarded by a Jade Dragon.
S4E5Shredder's Mom
Sep 14, 199022mNew York is in the middle of an induced heat wave caused by Shredder, who must battle the Turtles and deal with his mother, Miyoko Saki, at the same time.
S4E6Four Turtles and a Baby
Sep 17, 199022mWhen General Tragg and his troops attack the Neutrino capital, the Neutrino leaders, Zenter and Gizzla, send their infant daughter Tribble through a portal to Earth, asking the Turtles to look after her, but Tribble causes big trouble for our heroes.
S4E7Turtlemaniac
Sep 18, 199022mAn eccentric billionaire, Monroe Q. Flem, who is also a collector, wishes to collect every piece of TMNT memorabilia that he can get his evil hands on, including April and the Turtles themselves.
S4E8Rondo in New York
Sep 19, 199022mShredder, Bebop, and Rocksteady are in town to steal a rare new mutagen created by Oswald Dren, a grad student. Some mutagen is accidentally spilled onto a reel of movie film causing monsters to come to life.
S4E9Planet of the Turtles
Sep 20, 199022mThe Turtles must save the Earth from a massive energy drain and its Apocalyptic result by traveling to another dimension where turtles are the dominant species.
S4E10Name That Toon
Sep 21, 199022mA Technodrome computer disguised as an electronic keyboard ends up on Earth, and in the most unlikely of hands.
S4E11Menace, Maestro Please
Sep 28, 199022mThe Turtles must contend with the "Phantom of the Floxy" while trying to hinder Shredder's latest plan to bring the Technodrome back to earth.
S4E12Superhero for a Day
Sep 25, 199022mGadget Man comes out of retirement after 50 years, but is tricked by Shredder into fighting against the Turtles.
S4E13Back to the Egg
Sep 26, 199022mKrang hires a multi-dimentional ring-master who intends on making the Teenage Mutant Ninja Turtles part of his circus by using an anti-aging serum.
S4E14Son of Return of the Fly II
Sep 15, 199022mVengeful 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.
S4E15Raphael Knocks 'em Dead
Sep 15, 199022mRaphael must contend with a mobster named Pinky McFingers when he is kidnapped from a local comedy club.
S4E16Bebop and Rocksteady Conquer the Universe
Sep 22, 199022mOn their latest trip to Earth, Bebop and Rocksteady steal a machine that makes everyone scared of everything.
S4E17Raphael Meets His Match
Sep 22, 199022mRaphael wins a ticket to a costume party on MacDonald Crump's yacht and decides to go disguised as a Teenage Mutant Ninja Turtle.
S4E18Slash the Evil Turtle from Dimension X
Sep 29, 199022mBebop 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.
S4E19Leonardo Lightens Up
Sep 29, 199022mA 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.
S4E20Were-Rats from Channel 6
Oct 13, 199022mAfter 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.
S4E21Funny, They Shrunk Michaelangelo
Oct 13, 199022mWhile Michaelangelo is testing out a sailboard in the sewers he accidentally gets swept out into the city harbor.
S4E22The Big Zipp Attack
Oct 20, 199022mKrang 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.
S4E23Donatello Makes Time
Oct 20, 199022mProfessor 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.
S4E24Farewell, Lotus Blossum
Oct 27, 199022mWhile 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.
S4E25Rebel Without a Fin
Oct 27, 199022mDr. 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.
S4E26Rhino-Man
Nov 3, 199022mJ. Gordon Hungerdunger, a Texas millionaire, is holding a best super-hero contest. The winner of the contest will receive the humongous Malaprop Diamond.
S4E27Michaelangelo Meets Bugman
Nov 3, 199022mMichaelangelo 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.
S4E28Poor Little Rich Turtle
Nov 10, 199022mKrang 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.
S4E29What's Michaelangelo Good For?
Nov 10, 199023mThe Turtles go along with Michaelangelo and his pet pigeon to the zoo so that Dr. Goodfellow can check the bird out.
S4E30The Dimension X Story
Sep 8, 199023mDisguised as humans, Rocksteady and Bebop are sent to attach special trans-dimensional thrusters to the Channel Six Building.
S4E31Donatello's Degree
Sep 8, 199023mDonatello 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.
S4E32The Big Cufflink Caper
Sep 14, 199023mThe Turtles, bored at the lack of action, decide to investigate when they hear that cufflinks are being stolen around the city.
S4E33Leonardo VS Tempestra
Nov 17, 199023mThe 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.
S4E34Splinter Vanishes
Nov 24, 199023mReturning from another mission, the Turtles are shocked to discover their mentor has left the lair, leaving behind only a video taped message.
S4E35Raphael Drives 'Em Wild
Nov 24, 199023mOn his way home from getting pizza Raphael and a cab driver accidentally get exposed to rays from a Personality Transmogrifier.
S4E36Beyond the Donatello Nebula
Dec 1, 199023mDonatello has created a device to communicate with distant galaxies. While trying to communicate with the Turtle Nebula Donatello accidentally brings a spaceship to Earth.
S4E37Big Bug Blunder
Dec 1, 199023mA 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.
S4E38The Foot Soldiers Are Revolting
Dec 8, 199023mAfter Bebop and Rocksteady blow another assignment, Shredder fires them and decides to replace them with an intelligent Foot Soldier named Alpha One.
S4E39Unidentified Flying Leonardo
Dec 8, 199023mUFO sightings at an upstate farm town known as High Falls, cause April to investigate. Splinter foresees danger clouding April's visit and sends Leonardo to chaperone.