Superboy (Nolan North) and Miss Martian (Danica McKellar) impersonate the Terror Twins in order to go undercover inside Belle Reve Penitentiary, a federal prison designed to house the world's worst super-villains in this clip from the season one episode of Young Justice, "Terrors." Watch, courtesy of DC Kids.
Young Justice is the 2010 animated Cartoon Network TV series based on the DC Comics franchise of the same name.
The Young Justice comics were set in a DC Universe where the Teen Titans had grown up and dropped the "teen," part, leaving a new generation of underage heroes to be mentored by the Justice League. This animated series is set in its own universe where the Teen Titans never happened, and the Robin/Dick Grayson, Kid Flash/Wally West, Aqualad/Kaldur'ahm and Speedy/Roy Harper are offered the same mentorship, mostly under the guidance of Batman. Speedy declines and sets out to forge his own identity, but the core team are quickly joined by Superboy/Conner Kent, Miss Martian/M'gann M'orzz and Artemis.
