Season 1

E1. Things Change

Feb 8, 2003 · 21m

In their underground lair deep beneath the city streets, the Turtles and Master Splinter are suddenly attacked by a horde of Mouser robots!

E2. A Better Mousetrap

Feb 15, 2003 · 21m

The Turtles discover the source of the Mouser robots that trashed their old lair: Dr. Baxter Stockman -- a noted technological genius/inventor, who tries to pass off the Mousers as a means to eradicate the city's rat problem.

E3. Attack of the Mousers

Feb 22, 2003 · 21m

When April O'Neil wakes up in the Turtle's lair she has major trouble dealing with the reality of four giant talking Turtles and a Zen-master rat. She soon learns of the origin of the Teenage Mutant Ninja Turtles and they realize their common enemy is Baxter Stockman and his army of robotic Mousers.

E4. Meet Casey Jones

Mar 1, 2003 · 21m

Raphael is a little cooped up underground with only his brothers and Master Splinter. When Raphael almost clobbers Michelangelo in some brotherly sparring, it's apparent that Raphael needs to get out ... let off a little steam. But when he meets up with Casey Jones, a vigilante erring a little to the right of justice, Raphael must face the reality of his own hothead ways...

E5. Nano

Mar 8, 2003 · 21m

When a scientist accidentally unleashes a super-powered Nanotech monster with a childlike mind, it adopts a small-time thief as its father figure, and the mayhem begins!

E6. Darkness on the Edge of Town

Mar 15, 2003 · 21m

The Turtles, investigating a strange blackout, discover the Foot Ninja stealing a Japanese ceremonial sword from the Metropolitan Museum of Art.

E7. The Way of Invisibility

Mar 22, 2003 · 21m

After Casey Jones makes himself an unwanted guest in the Turtles' lair, Raphael takes him topside for a "breath of fresh air", where they encounter the Foot Tech Ninjas.

E8. Fallen Angel

Mar 29, 2003 · 21m

On a nightly training run, the Turtles and Casey Jones break up a Purple Dragon robbery. One of the perps is Angel, a girl Casey knows from the neighborhood who's going through her initiation rites to become a Purple Dragon.

E9. Garbageman

Apr 5, 2003 · 21m

The boys have made friends with a group of homeless, and are worried when they start mysteriously disappearing into the night!

E10. The Shredder Strikes (1)

Apr 12, 2003 · 21m

Oroku Saki (aka the Shredder) attempts to convince Leonardo that Saki is fighting the good fight ... that he's out there carrying on the great tradition of Bushido and Ninjitsu, and the turtles should stand with him.

E11. The Shredder Strikes (2)

Apr 19, 2003 · 21m

Our four turtles stand facing their most formidable foe to date ... the Shredder. Beaten and battle weary, the turtles get separated from one another during the martial arts mayhem and a building collapse!

E12. The Unconvincing Turtle Titan

May 2, 2003 · 21m

Believing the Turtles can accomplish so much more for the city, and inspired by iconic superhero Silver Sentry, Michelangelo decides to take a crack at being a superhero.

E13. Notes from the Underground (1)

May 10, 2003 · 21m

When Don's examination of some mysterious crystals attracts the attention of a subterranean monster, the Turtles underground exploration unearths a Foot Genetics Lab!

E14. Notes from the Underground (2)

May 17, 2003 · 21m

After discovering an abandoned underground Foot Genetics Lab, and being attacked by once-human Digging Creatures, the Turtles assist those very creatures in trying to repair a Force Field.

E15. Notes from the Underground (3)

May 24, 2003 · 21m

After befriending the once-human creatures in an abandoned underground Foot Genetics Lab, the Turtles join them on a journey deeper into the earth, where they come upon the ruins of a once-great subterranean city.

E16. The King

May 31, 2003 · 22m

With all the turtles living in April's apartment, things are getting a little crazy. But, when Donatello stumbles upon a fantastic monster in the basement, things get crazier.

E17. The Shredder Strikes Back (1)

Jun 7, 2003 · 21m

On a training run Leo is ambushed by a major Foot attack force, including Foot Tech Ninjas, their old enemy Hun, and a new threat: the Foot Elite!

E18. The Shredder Strikes Back (2)

Jun 14, 2003 · 21m

When the Foot Ninja attack April's apartment in force, the Turtles fight against overwhelming odds to get the wounded Leo to safety.

E19. Tales of Leo

Sep 13, 2003 · 21m

The Turtles, Splinter, Casey and April just barely manage to escape from the explosion that destroys the antique store. They hit the road and hide out at Casey's grandmother's old farmhouse, but Leonardo is badly wounded.

E20. The Monster Hunter

Sep 20, 2003 · 21m

Still recuperating up at Casey's grandmother's farm, the turtles are feeling the sting of boredom. Luckily, a scientist known as the "Monster Hunter" has come to the area searching for a legendary monster...

E21. Return to New York (1)

Sep 27, 2003 · 21m

The Turtles return to New York with one goal in mind: to destroy the Shredder once and for all.

E22. Return to New York (2)

Oct 4, 2003 · 21m

The Turtles and Splinter continue to fight their way up through the Foot Headquarters skyscraper, facing down three misshapen Mutant Shredder Clones, a hallway of traps, and the Mystic Ninja.

E23. Return to New York (3)

Oct 11, 2003 · 21m

With Stockman showing up in the middle of the final battle between our heroes and the Shredder, everything is thrown into chaos ... so much so that our heroes must join forces with the Shredder and Hun to defeat Stockman.

E24. Lone Raph and Cub

Oct 18, 2003 · 21m

With Splinter mysteriously vanished, the Turtles are feeling frustrated, not knowing where to start looking. Impatient with strategizing, Raph heads off on his own - and straight into trouble, of the mobster kind!

E25. Search for Splinter (1)

Oct 25, 2003 · 21m

After the frustrated Turtles exhaust their search for Splinter, their suspicions turn to the Guardians, and the trail soon leads them to a non-descript building, the initials of its company name spelling out "TCRI."

E26. Search for Splinter (2)

Nov 1, 2003 · 21m

The Turtles successfully infiltrate the mysterious TCRI Building, where they manage to sneak into its inner sanctum, and locate the unconscious Splinter inside a stasis tank.