Check out the synopsis for the April 11 Supergirl episode titled Myriad:
“KARA MUST FIND A WAY TO FREE HER FRIENDS WHEN NON AND INDIGO USE MIND CONTROL TO TURN NATIONAL CITY’S CITIZENS INTO THEIR OWN ARMY, ON “SUPERGIRL,” MONDAY, APRIL 11
“Myriad” – Kara must find a way to free her friends when Non (Chris Vance) and Indigo (Laura Vandervoort) use mind control to turn National City’s citizens into their own army, on SUPERGIRL, Monday, April 11 (8:00-9:00 PM, ET/PT) on the CBS Television Network.
RECURRING CAST: Laura Benanti (Alura/Astra), Jenna Dewan-Tatum (Lucy Lane), Chris Vance (Non), Peter Facinelli (Maxwell Lord), Laura Vandervoort (Indigo), Briana Venskus (Agent Vasquez), Glenn Morshower (General Sam Lane) and Dr. Eliza Danvers (Helen Slater)
GUEST CAST: Eve Torres Gracie (Maxima)
WRITTEN BY: Yahlin Chang and Caitlin Parrish
BASED ON: The Characters Appearing in the DC Comics
DIRECTED BY: Adam Kane”
Listed as a guest cast member is Eve Torres Gracie is Maxima. Aside from her WWE career, Torres has appeared on the television show Matador and the movie The Scorpion King 4: Quest for Power.