For the titular group, see The Legion.
"We have to stop her."
"Without Supergirl?"
"We have a literal Legion of superheroes.
Alex Danvers, J'onn J'onzz, and Winn Schott
"Legion of Super-Heroes" is the tenth and midseason premiere episode of the third season of Supergirl, and the fifty-second episode overall. It aired on January 15, 2018.


Struggling to heal from her injuries inflicted by Reign, Supergirl remains in a dreamlike state, unable to be reached. Mon-El recruits one of the Legion members, Brainiac 5, to try to bring her back. Meanwhile, Reign continues her rampage on the city so the D.E.O. teams up with the Legion of Superheroes to try to stop her.[src]


  • The binary code 0011101000101001 that Brainiac 5 wrote on Alex's cast translates to ":)", a common ASCII depiction of a smiley face.
  • Mystery Coluan

    Brainiac 5 in a pose reminiscent of Mystery Man from Lost Highway.

    The setting being partially inside Kara's subconscious, the clothes and poses of Brainiac 5, along with certain quotes of his while mentally speaking with Kara, are all greatly reminiscent of David Lynch's Lost Highway, particularly the character of Mystery Man.
  • Kara's cat Streaky introduced in this episode is a reference to Streaky the Supercat from the comics.
  • Mon-El mentions Ayla as one of The Legion's allies from the 31st century. This is a reference to the DC superhero Ayla Ranzz aka Lightning Lass, another member of the Legion of Super-Heroes.




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