Lanterns episode 3 drops a major DCU clue: a Black Mask tease

Episode 3 of HBO’s Lanterns slips in a big DC Universe hint: during John Stewart’s strange interview scene, a Janus Cosmetics sign shows up in the background. In the comics, that name points away from the Green Lantern Corps and much closer to Gotham, with a possible trail leading to Black Mask.

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Janus Cosmetics is tied directly to Roman Sionis in DC lore. He inherits the company, runs it into trouble, loses control after a string of business failures, and then gets rescued by Wayne Enterprises. That public embarrassment feeds his hatred of Bruce Wayne, and it’s part of what pushes Roman Sionis toward becoming Black Mask and building the False Face Society.

That’s what makes the reference so interesting here. Lanterns is playing as a grounded, True Detective-style mystery built around Hal Jordan and John Stewart, but it may also be quietly sketching out James Gunn and Peter Safran’s larger DC Universe, one where Gotham’s criminal underworld already exists on the same board.

There’s another piece to throw in. Reported Clayface set photos have shown Sionis Industries signage too, even though DC Studios still hasn’t officially confirmed Black Mask for the new DC Universe or announced any casting.

So if you’re watching for signs of how the DC Universe might connect its cosmic heroes to Gotham’s nastier crime corner, this Janus Cosmetics nod is one of the strongest hints so far.

You can watch Lanterns on HBO.