Gregor Karakov is a Quantum member in the James Bond film Quantum of Solace where he was portrayed by Gustavo Nanez.
Gregor Karakov’s only appearance in the film is at a Tosca performance at the Bregenzer Festspiele in Austria where during the performance he’s communicating with the other Quantum officials (including Mr White, Dominic Greene, Guy Haines, and Moishe Soref) via ear pieces. When White brings up whether or not they should be shift over to General Medrano’s political party Karakov replies by saying Quantum’s slogan, “we deal with the left or the right, with dictators or liberators.”
Bond interrupts the conversation and advises them to leave (using a deceased Quantum member’s earpiece). As he leaves Bond snaps a photo of him and back at the MI6 data bank Bill Tanner identifies Karakov and explains that he’s a Russian mining baron and owns most of the mines in Siberia. Karakov leaves alongside every Quantum member as their bodyguards engage in a shootout with Bond in the lobby. Karakov is not seen again.