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episode title: Fireworks

Air date: 2010-11-26

episode lenght: 22 minutes

Robin, Kid Flash, and Aqualad are captured and only Superboy, the telepathically controlled clone of Superman, can free them. As they struggle to reach the surface, they must do battle with the transformed scientist known as Blockbuster. (source imdb)

IMDB rating: 8.8

This exact episode (1/2): imdb number tt1758557

Jesse McCartney => imdb link: nm0565366
Danica McKellar => imdb link: nm0005211
Nolan North => imdb link: nm0636046
Khary Payton => imdb link: nm1146051
Jason Spisak => imdb link: nm1032853
Rene Auberjonois => imdb link: nm0041281
George Eads => imdb link: nm0247040
Miguel Ferrer => imdb link: nm0001208
Crispin Freeman => imdb link: nm0293342
Bruce Greenwood => imdb link: nm0339304
Phil LaMarr => imdb link: nm0482851
Mark Rolston => imdb link: nm0001679

Most of the info found on this page was found on imdb