[s5e12] Lost Heroes: Part One -

" Lost Heroes: Part One " is the of the animated series The Batman . It first aired on March 8, 2008 , and serves as the first half of the two-part series finale. Plot Summary

The episode features a large ensemble cast of notable voice actors: Rino Romano Robin (Dick Grayson): Evan Sabara Green Arrow (Oliver Queen): Chris Hardwick Superman: George Newbern The Flash: Charlie Schlatter Green Lantern (Hal Jordan): Dermot Mulroney Martian Manhunter: Dorian Harewood Hugo Strange / Toyman: Richard Green Mirror Master: John Larroquette Key Episode Details Director: John Fang and Vinton Heuck. Writers: Stan Berkowitz and Alexx Van Dyne. [S5E12] Lost Heroes: Part One

The Joker and Mr. Freeze make brief appearances as inmates at Arkham Asylum. " Lost Heroes: Part One " is the

Because they lack inherent superpowers, are ignored by the abductors and left to investigate the disappearances. Their search leads them to Arkham Asylum , where they discover that Hugo Strange has escaped and formed an alliance with The Joining , an alien race that previously attempted to invade Earth. Strange has used Joining technology to drain the heroes' powers and transfer them into a team of powerful android duplicates. Voice Cast Writers: Stan Berkowitz and Alexx Van Dyne

The episode centers on the mysterious abduction of the Justice League’s most powerful members. One by one, heroes including are picked off by an unknown force.