Oliver Queen (Stephen Amell) comes face to face with Konstantin Kozar, and we're given even more clues about Oliver's past in a CBR-exclusive clip from tonight's episode of "Arrow."

As the Russian villain Kozar, Dolph Lundgren's demeanor may be pleasant, but as viewers -- and Oliver -- know, he's a genuinely dangerous adversary for the future Green Arrow.

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“He’s very thoughtful and contemplates his lines and he has been great so far, but it’s a real change of pace,” Amell told CBR of Lundgren's addition to the "Arrow" cast. “I do think it would have been a missed opportunity in the last year of these flashbacks to not have a really worthy adversary. We found that in Dolph, which is why he’ll be around for a while. It’s been a blast to work with him. It’s been awesome.”

DOLPH LUNDGREN “ROCKY” GUEST STARS – When the bodies of two criminals are dropped at SCPD, Oliver (Stephen Amell) realizes there is a new Vigilante in Star City. The team is split about whether they should stop someone who is helping keep the city safe. Diggle (David Ramsey) is frustrated with his new situation and Thea (Willa Holland) fights for Lance (Paul Blackthorne) who confesses a shocking secret. Meanwhile, in the flashbacks, Oliver finally sits down with Konstantin Kovar (guest star Dolph Lundgren) (#507). Original airdate 11/16/2016.

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Starring Stephen Amell as the Emerald Archer, “Arrow” airs Wednesdays at 8 pm ET/PT on The CW. The series also stars Emily Bett Rickards, David Ramsey, John Barrowman, Willa Holland and more.