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Supergirl Episode 7 “Human For A Day” Description & First Pics – With A Constantine Guest!

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human1A beloved cast member from Constantine appears as another DC character — Jemm, Son of Saturn — in the December 7 episode of Supergirl!

Charles Halford, who played Chas in the short-lived NBC series and sadly didn’t get to come back when John Constantine returned on Arrow, plays the role of the alien character. Jemm is very cool… one could say he’s even truly outrageous! (Wait, that was Jem with one “M.” Our bad.)

Here’s how CBS describes the episode:

Kara and her friends must rely on their inner strength and courage when an earthquake strikes National City. Also, Alex’s mistrust of Hank reaches a breaking point when the earthquake traps them in the DEO with Jemm (Charles Halford), a powerful alien escapee, on SUPERGIRL, Monday, Dec. 7 (8:00-9:00 PM, ET/PT) on the CBS Television Network.

human2Guest stars in the episode, which is called “Human For A Day,” include Laura Benanti (Alura/Astra), Peter Facinelli (Maxwell Lord), Luke Macfarlane (Agent Donovan), Ashton Bingham (Senior Tech), David Lim (Agent Tsung), Ayo Sorrells (Agent Reynolds), Stephanie Arcila (Woman), Zhuair Haddad (Store Owner), Casey Strand (Reporter), and Bryan Lugo (Looter).

“Human For A Day” was written by Yahlin Chang and Ted Sullivan and is directed by Larry Teng.

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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There is 1 comment

  1. Don Stromberg

    November 19, 2015

    How about bringing POWER GIRL, Mary Marvel, Batgirl to play with Supergirl?

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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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