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Supergirl #6.4 “Lost Souls” Photos: Meet Nyxly!

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Peta Sergeant joins the cast of Supergirl as “Nyxly” in photos from the fourth episode of Supergirl Season 6 which is called “Lost Souls.” You can see the gallery below, but first, here’s a description with some spoilers:

SUPERGIRL FINDS A WAY HOME — Supergirl (Melissa Benoist) finds an opportunity to escape from the Phantom Zone but it comes with some dangerous strings attached. Meanwhile, Lena (Katie McGrath) joins the Super Friends on a mission but finds she disagrees with their plan of action against the Phantoms and wonders if she is truly ready to be a part of the team. Alysse Leite-Rogers directed the episode written by Karen E. Maser & Nicki Holcomb (#604). Original airdate 4/20/2021.

Supergirl

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Supergirl -- “Lost Souls” -- Image Number: SPG604fg_0002r.jpg -- Pictured: Melissa Benoist as Supergirl and Jason Behr as Zor-El. Photo: The CW -- © 2021 The CW Network, LLC. All Rights Reserved.

As for “Nyxly?” She is described as “a quirky and kind 5th Dimensional Imp, wrongly imprisoned in the Phantom Zone and driven by tragic backstory. She helps Kara when she least expects it, and their budding friendship not only heals some of Nyxly’s emotional pain, but helps Nyxly reclaim her own power.” And, yup, that means she is related to Mxyzptlk somehow… and it is said Thomas Lennon is returning as Mxy, so we can look forward to a reunion at some point!

About the author

About the author

Craig Byrne

Craig Byrne has been writing about Superman TV since 1995, when the "Lois & Clark Krypton Club" launched. He founded KryptonSite.com in February 2001, becoming the first fan site for The WB/CW television series Smallville. He also wrote the Official Companion books for Smallville seasons 4-7 as well as the Smallville Visual Guide.

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About KryptonSite

In a time before social media, Craig Byrne created KryptonSite as the ultimate fan destination for The WB/CW series Smallville which starred Tom Welling, Michael Rosenbaum, Kristin Kreuk, Erica Durance and more. In the decades since, KryptonSite has grown to cover newer Superman-related TV and movie projects while still always holding on to Smallville.

The web’s first source for Smallville news, continuing to cover Supergirl, Superman & Lois, the new Superman films and more!

Copyright © 2026 Craig Byrne & KryptonSite and the respective original authors of posts. Smallville, Kryptonite and other Superman-related items are the property of DC Comics. No infringement is intended.

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