1. Things Change
Aired: Feb 8, 2003The Teenage Mutant Ninja Turtles are ambushed by Mouser robots during a rigor...
2. A Better Mousetrap
Aired: Feb 15, 2003The Turtles uncover the identity of Stocktronics' CEO, Dr. Baxter Stockman, a...
3. Attack of the Mousers
Aired: Feb 22, 2003April O'Neil discovers the Turtles' lair after fainting from their initial en...
4. Meet Casey Jones
Aired: Mar 1, 2003Raphael's anger boils over during a sparring session, putting Michelangelo's ...
5. Nano
Aired: Mar 8, 2003A cunning thief unleashes a wave of crime when he discovers a cutting-edge AI...
6. Darkness on the Edge of Town
Aired: Mar 15, 2003A sudden power outage plunges the Turtles into darkness, prompting them to ve...
7. The Way of Invisibility
Aired: Mar 22, 2003Raphael takes Casey Jones to the surface to get some fresh air, but their out...
8. Fallen Angel
Aired: Mar 29, 2003Casey's friend Angel is on the verge of joining the notorious Purple Dragons ...
9. Garbageman
Aired: Apr 5, 2003The Turtles embark on a mission to uncover the truth behind the sudden vanish...
10. The Shredder Strikes: Part 1
Aired: Apr 12, 2003The next episode of the series sees Leonardo encountering Oroku Saki, the eni...
11. The Shredder Strikes: Part 2
Aired: Apr 19, 2003Master Splinter searches for his sons and prepares a counteroffensive after f...
12. The Unconvincing Turtle Titan
Aired: May 2, 2003Michelangelo creates his alter ego, Turtle Titan, and teams up with Silver Se...
13. Notes from the Underground: Part 1
Aired: May 10, 2003The Turtles' underground expedition stumbles upon a shocking discovery - a Fo...
14. Notes from the Underground: Part 2
Aired: May 17, 2003The Turtles stumble upon a deserted underground Foot Genetics Lab and are amb...
15. Notes from the Underground: Part 3
Aired: May 24, 2003The ancient subterranean city holds the secret to the crystals, where a lone ...
16. The King
Aired: May 31, 2003The Turtles relocate to April's residence, with Donatello stumbling upon the ...
17. The Shredder Strikes Back: Part 1
Aired: Jun 7, 2003Leonardo faces off against a massive army of Foot Ninja and Hun, and things t...
18. The Shredder Strikes Back: Part 2
Aired: Jun 14, 2003The next episode will follow Leonardo as he finds himself in April's apartmen...
19. Tales of Leo
Aired: Sep 13, 2003The group escapes the impending explosion by fleeing to Casey's grandmother's...
20. The Monster Hunter
Aired: Sep 20, 2003The Turtles try to stay occupied at the farmhouse while recovering, with Raph...
21. Return to New York: Part 1
Aired: Sep 27, 2003The Turtles and Splinter launch a surprise attack on the Shredder's headquart...
22. Return to New York: Part 2
Aired: Oct 4, 2003The Turtles face off against a series of formidable foes, including clones, F...
23. Return to New York: Part 3
Aired: Oct 11, 2003The Turtles engage in a fierce battle against the Shredder, with Master Splin...
24. Lone Raph and Cub
Aired: Oct 18, 2003The Teenage Mutant Ninja Turtles face a new challenge as Master Splinter goes...
25. Search for Splinter: Part 1
Aired: Oct 25, 2003The Turtles' quest to find Splinter leads them to investigate the Guardians, ...
26. Search for Splinter: Part 2
Aired: Nov 1, 2003The Turtles infiltrate the TCRI building, uncovering secrets beyond its surfa...