Teenage Mutant Ninja Turtles (2003)

Return to the Underground

Season 2, Ep 13, Aired 3/6/04
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  • Episode Description
  • The Turtles return to the underground city they discovered in the three-part "Notes From The Underground", but they find the city is now abandoned, it's crystal moon power source missing, and it's human population reduced to monsters, can an unstable serum created by Donatello restore the humans to normal?

  • Cast & Crew
  • Dan Green

    Additional Voices

  • Darren Dunstan

    Splinter

  • Wayne Grayson

    Michaelangelo

  • Frank Frankson

    Raphael

  • Michael Sinterniklaas

    Leonardo

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  • Trivia & Quotes
  • Quotes (5)

    • Raph: Don't worry Mikey. It's going to be a piece of cake. Mikey: Yeah, except we're the cake.

    • Mikey: (imitating Don's voice) Hey guys, lets go to the underground city! We'll have some laughs! We'll get eaten!

    • Mikey: Tell me again why we're going back here and not tunneling to... Let's say... Singapore?

    • Mikey: Nets! I'm all out of nuts! I mean, nuts! I'm all out of nets!

    • Don: What kind of idiot do you think I am? Mikey: There are different kinds?

    Notes (2)

    • Donatello introduces his Turtle Tunneler.

    • Prologue Narrator: Donatello

    Trivia (4)

    • The fact that Donatello could sweat, as seen here, and that the Turtles show up on thermal imaging (as seen in "Attack of the Mousers" implies that they acquired some mammalian traits of humans with their mutation, in addition to humanoid form.

    • Quarry's real name is revealed to be Sydney after the Turtles test the crystalized serum on Quarry.

    • Before the mindless Quarry attacks, the Turtles find a room with several more crystalized ancient residents of the city. This small addition is not addressed again in this episode, but will be much later in The Entity Below.

    • When Donatello and Sydney were recovering the Crystal Moon and the heat shields were starting to fail, Donny was sweating. Turtles are cold blooded reptiles, and cannot sweat.

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