Attack of the Mousers
Teenage Mutant Ninja Turtles (2003) episode
Season Code: S01E03
Episode: 3
Original airdate February 22, 2003
Written by Eric Luke
Supervising Producer Lloyd Goldfine
Producers: Gary Richardson
Frederick U. Fierst
Al Kahn
Norman Grossfeld
Thomas Kenney
Directed by Chuck Patton
Story Editor: Lloyd Goldfine
Episode chronology
← Previous Next →
"A Better Mousetrap" "Meet Casey Jones"

Teenage Mutant Ninja Turtles Season 1
February 8, 2003 - November 1, 2003
List of Teenage Mutant Ninja Turtles episodes


  1. Things Change
  2. A Better Mousetrap
  3. Attack of the Mousers
  4. Meet Casey Jones
  5. Nano
  6. Darkness on the Edge of Town
  7. The Way of Invisibility
  8. Fallen Angel
  9. Garbageman
  10. The Shredder Strikes, Part 1
  11. The Shredder Strikes, Part 2
  12. The Unconvincing Turtle Titan
  13. Notes from the Underground, Part 1
  14. Notes from the Underground, Part 2
  15. Notes from the Underground, Part 3
  16. The King
  17. The Shredder Strikes Back, Part 1
  18. The Shredder Strikes Back, Part 2
  19. Tales of Leo
  20. The Monster Hunter
  21. Return to New York, Part 1
  22. Return to New York, Part 2
  23. Return to New York, Part 3
  24. Lone Raph and Cub
  25. The Search for Splinter, Part 1
  26. The Search for Splinter, Part 2

Season 1Season 2Season 3Season 4Ninja TribunalFast Forward - Back to the Sewer

"Attack of the Mousers" is the third episode of the 2003 TV series. It first aired on February 22nd, 2003. It had 2.12 million on the 4kids website as of 2007.


Major Characters

Minor Characters

Main Locations, Vehicles and Accessories


Voice-over introduction

Michelangelo: "A very wise frog once said, "It's not easy being green," but believe me, he didn't know the half of it. In the past 48 hours my brothers and I have been attacked by killer robots, had our home caved in on us, and had a serious butt-kicking ninja battle with some deadly ninja assassins.

We made a shell-raising escape in an armored car, found a new place to live..."

Michelangelo: "This is beyond awesome!"

Michelangelo: "...and were attacked by even more killer robots. Oh, and we also managed to perform our very first ninja rescue. This is the closest any of us have ever been to a human being, and it raises one very big question:"

Michelangelo: "Can we keep her?"

Plot Synopsis

From the last episode, the Turtles have taken the unconscious April back to the lair and have explained to Splinter that they had no other choice. As this discussion is going on April wakes up, thinking that what she saw was just a dream. But when she notices the Turtles looking at her, she freaks out again, and passes out at the sight of Splinter.

Mikey scares April when they first meet

In the meantime, the Mousers are breaking into a bank vault from underground and stealing all the contents, cash, stocks, bonds, jewels, etc. When the police finally arrive and get the vault door open, all that is left is wreckage and a hole in the floor. Back at the lair, April has finally awakened and decided that the giant talking turtles and rat are real and she had better deal with them. Splinter retells the origin story for her, with appropriate accompanying animation. He was an ordinary rat once, who witnessed a child rescue a blind man from a runaway truck filled with a strange glowing fluid. A canister of the fluid fell out just as four baby turtles were dropped into the sewer. Splinter rescued the baby turtles and put them in a coffee can, only to wake up with greater mental and physical faculties the next morning. The Turtles also grew and learned to speak, so he decided to raise them as his children and teach them ninjutsu. How he knew ninjutsu is not yet explained.

Baxter Stockman argues with his mysterious benefactor.

As Splinter is wrapping up the tale of the Turtles, Mikey sees a report on TV about the bank robbery and calls everyone over to watch and listen. It does not take but a second for everyone to figure out what caused all the damage and robbed the bank. April then proceeds to tell all she knows about Baxter Stockman, and the Mousers. After hearing April’s tale, the Turtles decide to raid Stocktronics and put an end to the Mousers for good.

April helps the guys break into the Stocktronics lab. After making their way past all the guards and security devices, the Turtles and April find themselves in the Mouser storage area, surrounded by currently de-activated Mousers. Just as the silence is getting creepy, things start to get active and a light comes on in the control room to reveal Stockman at the Mouser control panel.

After an exciting battle, the Turtles manage to escape the lab floor and break into the control room, capturing Stockman inside. After Stockman deals with the shock of four giant talking ninja turtles, he activates a program to have all his mousers descend on the control room and destroy everything within. As we hear the Mousers closing in, the Turtles and April try to override the system instructions, but nothing seems to be working. With everyone distracted by the Mousers, Stockman manages to escape the lab.

Just as it looks like it is curtains for our heroes, April manages to stop the Mousers, but only by activating a self-destruct sequence. There is no time to waste, and the Turtles and April rush out of the lab back into the sewer tunnels, leaving Stockman to be dealt with at another time. Meanwhile, as Stockman is running from the lab, he is collared by Oroku Saki's huge enforcer Hun.

We end with April being welcomed into the Turtles' family and Stockman feeling the wrath of a severely disappointed Saki. Saki then orders that Stockman pay the price for this failure. The only thing Stockman can provide of any value is a hazy thermal image of the Turtles. This leaves Saki wondering about this new and unexpected problem before slashing the image with his tekagi-shuko claw.


Michelangelo: "Can we keep her?"

[April begins waking up in the lair]
April: Ah man, what a dream. Turtles fighting robots...did I fall asleep watching TV again? That was the [realizes the Turtles are looking at her]...weirdest. thing. I've. ever. seen.
Michelangelo: Hi!
April: [screams in terror] AHHHHHHHHHHHHHH!
Michelangelo: [screams back in shock] AHHHHHHHHHH! Please don't do that, I almost jumped outa my shell!
April: It has...three...fingers! *puts pillow over her head* I'm asleep! I'm asleep! I'm asleep! I'm asleep!
Donatello: This isn't going very well.
Michelangelo: Hey, c'mon! We don't have much practice talking to humans. It's gonna take a little time!

[Mikey is listening to music while he waits for April to wake up.]
Raphael: Hey! Hey, Earth to Mikey!
Michelangelo: Ow! What?
Raphael: She woke up. Leo made her some tea and she's ready to consider that we might be real.
Michelangelo: Awesomely radical, dude!
Raphael: You keep talkin' like that, she's gonna pass out again.
Michelangelo: Hey!

Michelangelo: Sooo, you okay now?
April: Yes, thanks. I've decided this is either a very long dream that I keep not waking up from, or it's the weirdest thing that ever happened to me.

[April tells the Turtles that she would never tell anyone about them.]
April: Seriously, I promise.
[Splinter looks into April's eyes.]
Splinter: I believe you.
Leonardo: Is this another lesson, Master Splinter? How to sense the truth?
Splinter: No. This is called trusting your gut.

Splinter: From a battered book on Renaissance art that I fished out of the storm drain, I chose names for each of them. Leonardo. Donatello. Raphael. Michelangelo. Together they are...
Turtles: Turtles Forever!
[Together the Turtles high five]
Michelangelo: [To April] Or something like that, that we all yell at once.

April: It won't be easy. Stocktronics is rigged with the latest up-to-the-minute security tech.
Michelangelo: Pfft, bring it on! Allow me to introduce our very own secret weapon. The techno-turtle himself, Donatello! Take a bow, Don!
Donatello: [Flattered] Ah, cut it out!

Leonardo: Your reign of terror is over, Stockman!

Michelangelo: You been practicin' that?

Leonardo: You like it?

[Surrounded by mousers in the control room]

Baxter Stockman:Excellent! EXCELLENT! The world as they say is my oyster, and aren't the pearls lovely? *Grr* What?
Oroku Saki: Doctor Stockman.
Baxter Stockman: Make it quick! I'm very busy.
Oroku Saki: I am contacting you to verify that you are fulfilling the end of our bargain. And that you are on schedule.
Baxter Stockman: I will NOT stand for anymore of this IDIOTIC interrogation! I've advanced the Mousers to the next stage and they are securing the funds from the banks as you requested. Can you grasp that SIMPLE concept?!
Oroku Saki: Do not presume too much Doctor Stockman! The price for failure will be quite, extreme.
Baxter Stockman: Imbecile!

Raphael: This is it. It's been fun guys.
Michelangelo: Even me, Raph?
Raphael: Even you, Mikey. Especially you.

Donatello: Great work, April. I've never seen anything like it.
April: Guys! Guys, I wasn't able to shut them down!
Mikey: They look pretty shut down to me.
April: The only way I could stop them was by initiating an overload sequence.
Mikey: In other words... Let's get out of here!!!


  • This episode is based on issue #2 of the Mirage Comics.
  • This episode is ranked #6 on the TMNT Top Ten.
  • The young Turtles grow strong by eating pizza. Pizza was the only food the Turtles were seen eating in the 1987 cartoon.
  • Michelangelo's line "can we keep her?" when talking about April is originally from the first TMNT movie.
  • This is the second episode where Mikey says "Cowabunga!", albeit in a flashback.
  • Michelangelo's first line of the episode was "a very wise frog once said", referencing the world famous Muppet, Kermit the Frog.
  • This episode has Mikey's first girly scream after he scares April, and in return April scares him.
  • When Mikey says "Can we keep her?" it may have been a mistake because in the previous episode he said "Can I keep her?".


  • After Leonardo says "here's to the new team" Donatello's bandana looks just like Raphael's bandana.



External links