Three teenage sidekicks decide to investigate a fire at a genetics laboratory... and discover a plot to create a clone of Superman.



, (character created by: Batman) | 4 more credits »

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Episode cast overview:
Dick Grayson / Robin (voice)
Kaldur'ahm / Aqualad (voice)
Wally West / Kid Flash (voice)
Mark Desmond (voice)
Roy Harper / Speedy / Jim Harper / Guardian (voice)
Bruce Wayne / Batman (voice)
King Orin / Aquaman / Dubbilex / Scientist (voice)
Computer (voice)
Clark Kent / Superman / Zatara (voice)
J'onn J'onzz / Martian Manhunter / Batallion Chief (voice)

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Robin, Aqualad, Kid Flash, and Speedy are eager to become full-fledged members of the Justice League. However, they quickly discover they've been relegated to the bench. Speedy walks out, angry, while the other three decide to investigate a suspicious fire at Cadmus Laboratories. They discover an underground base, hundreds of genomorph warriors, and a clone of... Superman. Written by Gislef

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Release Date:

26 November 2010 (USA)  »

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Did You Know?


Phil La'Marr (Aquaman) and Khary Payton (Aqualad) both had major voice acting roles in the 2008 video game "Metal Gear Solid 4: Guns of the Patriots." See more »


Mark Desmond: You realize once we get in there, we can't *ever* let them leave.
Guardian: Doc, these aren't your typical meddling kids. You don't want to get on the wrong side of the Justice League.
Mark Desmond: Better than getting on the wrong side of the Cadmus Directors. Believe me.
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Young Justice Theme
Written by Kristopher Carter, Michael McCuistion, and Lolita Ritmanis
Performed by Kristopher Carter, Michael McCuistion, and Lolita Ritmanis
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