|"Legion of Super-Heroes"|
|File:Supergirl 3x10 001.jpg|
|Air date||January 15th, 2018|
|Writers||Derek Simon; Eric Carrasco|
|Producers||Greg Berlanti; Andrew Kreisberg; Jessica Queller; Robert Rovner; Sarah Schechter; Paula Yoo; Chris Pavoni; Gabriel Llanas; Caitlin Parrish; Jesse Warn; Joanie L. Woehler; Carl Ogawa; Dani Dornfeld Yaroslow; Daphne Raves|
|Starring||Melissa Benoist; Mehcad Brooks; Chyler Leigh; Jeremy Jordan; Katie McGrath; Odette Annable; David Harewood|
"Legion of Super-Heroes" is the tenth episode of season three of the superhero fantasy series Supergirl and the fifty-second episode of the series overall. It was directed by Jesse Warn with a script written by Derek Simon and Eric Carrasco. It first aired on the CW Network on Monday, January 15th, 2018 at 8:00 pm.
|Melissa Benoist||Supergirl, Kara Danvers|
|Mehcad Brooks||James Olsen|
|Chyler Leigh||Alex Danvers|
|Jeremy Jordan||Winn Schott|
|Katie McGrath||Lena Luthor|
|Odette Annable||Samantha Arias|
|David Harewood||J'onn J'onzz|
|Chad Lowe||Thomas Coville|
|Emma Tremblay||Ruby Arias|
|Jesse Rath||Brainiac-5, Querl Dox|
|Amy Jackson||Saturn Girl, Imra Ardeen|
|Anjali Jay||Dark Kryptonian|
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