Teenage Mutant Ninja Turtles: Season 4
Season 4 Lore Primer
Key plot threads, lore context, and character stakes you need to remember before diving into this season.
- Directly follows the overarching narrative developments of Teenage Mutant Ninja Turtles Season 3.
- Faction dynamics and core character alliances shift under escalating external stakes.
- Crucial mysteries introduced previously reach key turning points and narrative reckonings.
- Sets up serialized story arcs that build directly toward the climactic season finale.
Episode Guide
Season 4 Progress Shield
Plan Six From Outer Space
Sep 10, 1990
With 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 Dimensio
Turtles of the Jungle
Sep 11, 1990
A 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
Michaelangelo Toys Around
Sep 12, 1990
While trying to see the new toys at the Toy Fair, Michaelangelo stumbles upon a plot to take over a noted toy company.
Peking Turtle
Sep 13, 1990
The 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.
Shredder's Mom
Sep 14, 1990
New 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.
Four Turtles and a Baby
Sep 17, 1990
When 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 Tur
Turtlemaniac
Sep 18, 1990
An 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 Turt
Rondo in New York
Sep 19, 1990
Shredder, 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 causi
Planet of the Turtles
Sep 20, 1990
The 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.
Name That Toon
Sep 21, 1990
A Technodrome computer disguised as an electronic keyboard ends up on Earth, and in the most unlikely of hands.
Menace, Maestro Please
Sep 28, 1990
The Turtles must contend with the "Phantom of the Floxy" while trying to hinder Shredder's latest plan to bring the Technodrome back to earth.
Superhero for a Day
Sep 25, 1990
Gadget Man comes out of retirement after 50 years, but is tricked by Shredder into fighting against the Turtles.
Back to the Egg
Sep 26, 1990
Krang 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.
Son of Return of the Fly II
Sep 15, 1990
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.
Raphael Knocks 'em Dead
Sep 15, 1990
Raphael must contend with a mobster named Pinky McFingers when he is kidnapped from a local comedy club.
Bebop and Rocksteady Conquer the Universe
Sep 22, 1990
On their latest trip to Earth, Bebop and Rocksteady steal a machine that makes everyone scared of everything.
Raphael Meets His Match
Sep 22, 1990
Raphael wins a ticket to a costume party on MacDonald Crump's yacht and decides to go disguised as a Teenage Mutant Ninja Turtle.
Slash the Evil Turtle from Dimension X
Sep 29, 1990
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 fram
Leonardo Lightens Up
Sep 29, 1990
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
Were-Rats from Channel 6
Oct 13, 1990
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.
Funny, They Shrunk Michaelangelo
Oct 13, 1990
While Michaelangelo is testing out a sailboard in the sewers he accidentally gets swept out into the city harbor.
The Big Zipp Attack
Oct 20, 1990
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 cr
Donatello Makes Time
Oct 20, 1990
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 tim
Farewell, Lotus Blossum
Oct 27, 1990
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.
Rebel Without a Fin
Oct 27, 1990
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.
Rhino-Man
Nov 3, 1990
J. Gordon Hungerdunger, a Texas millionaire, is holding a best super-hero contest. The winner of the contest will receive the humongous Malaprop Diamond.
Michaelangelo Meets Bugman
Nov 3, 1990
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.
Poor Little Rich Turtle
Nov 10, 1990
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 Che
What's Michaelangelo Good For?
Nov 10, 1990
The Turtles go along with Michaelangelo and his pet pigeon to the zoo so that Dr. Goodfellow can check the bird out.
The Dimension X Story
Sep 8, 1990
Disguised as humans, Rocksteady and Bebop are sent to attach special trans-dimensional thrusters to the Channel Six Building.
Donatello's Degree
Sep 8, 1990
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.
The Big Cufflink Caper
Sep 14, 1990
The Turtles, bored at the lack of action, decide to investigate when they hear that cufflinks are being stolen around the city.
Leonardo VS Tempestra
Nov 17, 1990
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.
Splinter Vanishes
Nov 24, 1990
Returning from another mission, the Turtles are shocked to discover their mentor has left the lair, leaving behind only a video taped message.
Raphael Drives 'Em Wild
Nov 24, 1990
On his way home from getting pizza Raphael and a cab driver accidentally get exposed to rays from a Personality Transmogrifier.
Beyond the Donatello Nebula
Dec 1, 1990
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.
Big Bug Blunder
Dec 1, 1990
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.
The Foot Soldiers Are Revolting
Dec 8, 1990
After Bebop and Rocksteady blow another assignment, Shredder fires them and decides to replace them with an intelligent Foot Soldier named Alpha One.
Unidentified Flying Leonardo
Dec 8, 1990
UFO 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.