Another DC Comics character may be headed to Fox's "Lucifer," although it's not necessarily the one viewers were hoping for.

Asked by a fan whether John Constantine might appear on the fantasy crime drama, showrunner Ildy Modrovich told TVLine, “Never say never, but right now we have no plans for him.” That, frankly, does sound like she's saying "never." But then Modrovich dangled another name from DC Comics history: “We might invite a little character from the comic books, Cain, at some point.”

Although "Constantine" devotees are unlikely to view Cain as worthy trade-off for actor Matt Ryan, the character undoubtedly has his fans.

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Based on the biblical figure, Cain was introduced by creators Bob Haney, Jack Sparling and Joe Orlando in 1968's "House of Mystery" #175 as a "host" for the horror anthology; his long-suffering brother Abel debuted a year later, and served as similar role in "House of Secrets." The siblings have continued to appear in the DC Universe after the cancellation of their titles, perhaps most prominently in "The Sandman," where they were residents of the Dreaming, often serving as comedy relief.

Immortal, Cain is protected from harm by the mark placed on his forehead by God. It was because of that Morpheus sent him as an emissary to Lucifer in Hell.

It remains to be seen whether a potential appearance on "Lucifer" by Cain also signals the arrival of Abel, who's frequently killed by his brother in a reenactment of the Bible's first murder, only to be resurrected again and again.

Starring Tom Ellis as the former king of Hell who abandons his throne to open a nightclub, and then help police, in Los Angeles, "Lucifer" airs Mondays at 9 p.m. ET/PT on Fox.