Recap / Teenage Mutant Ninja Turtles 2003 S 4 E 5 I Monster

The Turtles and Casey have gone to an abandoned suburb to train, but quickly discover they're not alone. As the darkness closes in, The Rat King starts to play a very twisted game with our heroes...

This episode provides examples of

  • Adaptational Badass: The Rat King. In his first comic appearance, he didn't have any major fighting skills; he relied on vantage points. This version is the Slayer from last season—a Super Soldier that can take on all five heroes at once and survive all kinds of punishment.
  • Ax-Crazy: The Rat King
  • Badass Boast: "They fled by now, but I will haunt their nightmares for many days to come. I am the monster they will never escape! Everything fears me! Everything except... the rat."
  • Bandaged Face: The Rat King
  • Batman Gambit: Faced with multiple foes, the Rat King runs. He gets them pursue him into a massive feeding area for his little friends.
  • The Beastmaster: The Rat King uses hordes of rats to attack the Turtles and Casey
  • But for Me, It Was Tuesday: Leo finds the Rat King's moves familiar, but without proper context, he can't tell from where.
  • Clone Degeneration: The Rat King
  • Flashback: The Rat King repeatedly experiences flashes of his creation and prior encounter with the Turtles.
  • I Am a Monster: The Rat King asserts this in his opening monologue and is proud of it.
  • Mythology Gag: Since the episode itself adapts the Rat King's first appearance, his monologues are lifted pretty much wholesale from that issue.
  • Nightmare Fuel Station Attendant: In his final monologue, the Rat King expresses certainty he'll haunt his foes' nightmares for many days to come.
  • Not Quite Dead: The Rat King is presumably devoured by his rats, but the ending reveals he's still alive.
  • Oh Crap!: The Rat King when he looks at a shuriken and remembers facing the Turtles before.
  • Rage Breaking Point: Leo's anger this season comes out, as he has enough of the Rat King and fights him one on one.
  • Save the Villain: During their fight, Leonard tries to push the Rat King out of the way of a building collapse.
  • Shout-Out: the name of the episode is a reference to Isaac Asimov's novel I, Robot
  • Swarm of Rats: the Rat King repeatedly tries to take down the Turtles by using hundreds of hungry rats
  • Taking You with Me: The Rat King tries to drag Leo down to the rats with him.
  • Tempting Fate: Casey notes they're just rats and asks how bad they could be. Mikey points to the bones lying on the ground.
  • The Unreveal: Inverted. To the characters, the Rat King is practically a Giant Space Flea from Nowhere, and they're left with only questions about this adventure. The audience, however, quickly learns he is Bishop's lost super soldier.
  • You Dirty Rat: Whilst Master Splinter normally subverts this trope, this episode plays it very straight with the rat hordes, even giving the rats evil red eyes.