I find it odd that people still ask me about this one considering it’s been previously speculated. Callan Mulvey is indeed rumored to be playing Luthor’s Russian right hand man Anatoli Knyazev aka the KGBeast based on what I’m hearing from sources.
Devin Faraci first reported we will be seeing Knyazev in Batman v Superman: Dawn of Justice
As Devin also stated, we won’t be getting the comic book version of KGBeast. Knyazev is the badass that reportedly keeps tabs on the metahumans in the movie. Having Knyazev is I think a very cool easter egg and throwback.
I absolutely loved Ten Nights Of The Beast when it first dropped in comic book stores. I still own the original four issues to this very day. Batman #417-420. From the Mike Zeck covers, to the tight plotting, in my opinion I thought KGBeast was Batman’s toughest foe who matched him in both brains and brawn. That is until Bane came along just a few years later. KGBeast became a bum that Bane smacked around in prison in Vengeance of Bane.