Beyond the Known Universe

Episode number: 1

The Moons of Thalos 3

Episode number: 2

Overview: The Turtles and their enemy crash-land on an ice moon and they must put aside their differences in order to survive.

The Weird World of Wyrm

Episode number: 3

Overview: Casey releases a wish-granting alien named Wyrm, who wants his freedom to do whatever he wants to the universe

The Outlaw Armaggon!

Episode number: 4

Overview: A shark-like bounty hunter is hired by Lord Dregg to destroy the turtles, who choose to hide out in an abandoned space station.

Riddle of the Ancient Aeons

Episode number: 5

Journey to the Center of Mikey's Mind

Episode number: 6

The Arena of Carnage

Episode number: 7

The War for Dimension X

Episode number: 8

Overview: The Turtles must gain the trust of the Utrom Council in order to find the next piece of the black hole generator.

The Cosmic Ocean

Episode number: 9

Overview: The Turtles journey through an ocean-like area of space.

Trans-Dimensional Turtles

Episode number: 10

Overview: The Turtles are transported to another dimension where they meet their 1980s counterparts and work together to battle Krang.

Revenge of the Triceratons

Episode number: 11

Overview: Donatello is feeling inferior to Fugitoid, but his intellect is put to the test when the Triceratons attack.

The Evil of Dregg

Episode number: 12

Overview: When Raphael loses his fighting mojo, he must overcome his feelings to save his brothers from certain doom.

The Ever-Burning Fire

Episode number: 13

Overview: The team must overcome impossible odds in order to obtain the final Black Hole Generator piece that is located on the planet Magdomar.

Earth's Last Stand

Episode number: 14

City at War

Episode number: 15

Broken Foot

Episode number: 16

Overview: When Leonardo secretly allies himself with Karai, he gets himself into deeper danger than he could have realized.

The Insecta Trifecta

Episode number: 17

Overview: Raphael must overcome his fear of insects to lead the team when they are forced to battle Stockman-Fly's new insect minions.

Mutant Gangland

Episode number: 18

Overview: Don Vizioso's gang tracks the Turtles with a slew of Anti-Mutant weapons.

Bat in the Belfry

Episode number: 19

The Super Shredder

Episode number: 20

Overview: For the first time, the Turtles encounter something they cannot defeat – the Super Shredder!

Darkest Plight

Episode number: 21

Overview: The Turtle team hunts for their Sensei, but soon realizes they are being hunted as well.

The Power Inside Her

Episode number: 22

Overview: Donatello becomes concerned and decides to test April, only to discover that her psychic abilities are rapidly growing in power.

Tokka vs. the World

Episode number: 23

Tale of Tiger Claw

Episode number: 24

Requiem

Episode number: 25

Owari

Episode number: 26

Overview: With the demise of their beloved father and Karai incapacitated, the Turtles, April, and Casey, infiltrate Super Shredder's new lair to put an end to Oroku Saki once and for all, no matter what it takes.