It's time to put a face to one of Grimm's biggest threats.

'Grimm' Season 5 Spoilers: Nick & Eve or Nick & Adalind? A Couple Gets Cozy In Midseason Premiere PHOTOS

Hadrian's Wall is gearing up to take down Black Claw, and even though the organization has two particularly sharp swords in the form of Eve (Bitsie Tulloch) and Trubel (Jacqueline Toboni), Lucien Petrovich (Bailey Chase) may give them a run for their money.

First introduced in "Wesen Nacht," the Petrovich will stick around for quite a bit, according to TV Line.

'Grimm' Season 5: Eve Is A 'Ruthless Weapon', Can Nick Accept The Change?

"He's a pure believer, but he's got a streak of deviousness in him and he can't really be trusted, even by his own people," series co-creator David Greenwalt said. "He'll be around a little bit."

Greenwalt also implied that Chase's character will be more than willing to sacrifice his foot soldiers for the greater good.

While the oncoming wesen storm has yet to truly break, the cast has stated that it will bleed into every facet of the series.

"Black Claw are now being tied into pretty much every procedural episode we have," Bree Turner (Rosalee) teased, according to IGN. "There's a real connective tissue in this season that we haven't had before. Even when we go away from the overarching plot into the more procedural fare there are connecting strings to this violent uprising that's happening."

Find out more when Grimm airs Fridays at 9 p.m. ET on NBC.

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