In the Supergirl Season 4 finale, we first heard whispers of Leviathan. In the episode’s final moments, an older woman approached Eve, telling her that: “Leviathan is everywhere. Leviathan is everyone. And Leviathan is coming.” For her part, Eve looked terrified, the scene suggesting she has been under Leviathan’s control for a long while.
“It’s our own incarnation of Leviathan, based on what’s come before [in the comic books],” executive producer Robert Rovner told us. “It’s going to be a full, season-long arc and, like we did with Red Daughter, we’re going to dole it out and have little clues along the way until it evolves into something much bigger.”
In the comic books, Leviathan is a secretive criminal organization filled with assassins, superpowered fighters, and scientists that first appeared in 2010’s Batman: The Return. More recently, the shadowy organization has been seen in the six-part Event Leviathan comics book series, which saw Leviathan slowly taking out its competition in an attempt to mold the new world order.
It seems likely that the season-long Leviathan arc will somehow tie into Supergirl Season 5’s theme of technology.
“The theme for Season 5 is technology,” executive producer Jessica Queller told us. “We’re calling it our Black Mirror season. We’re exploring how technology is literally changing the fabric of humanity. Our addiction to our devices and, at the end of last season, we took down the bad president and it’s time to rebuild the world. However, that job is so overwhelming, people tend to want to escape into technology and that might be exploited against them.”
We’ll keep you updated as we hear more about Supergirl Season 5. In the meantime, check out our primer on what exactly Crisis on Infinite Earths means for the Arrowverse. You can read more about Supergirl Season 5 here.