He was portrayed by Ulrich Thomsen, who also played Gerard of Ridefort in Kingdom of Heaven.
Being an employee of King Industries and head of Elektra's personal security, Davidov was tasked by both Elektra and Renard to kill James Bond in order to cover up their plot of destroying Istanbul in order to sabotage the Russian oil pipeline so that they can monopolize the oil market with their own pipeline.
To that end, Davidov helped Mikhail Arkov in smuggling Parahawks to kill Bond at Azerbaijan. However, Bond destroys the Parahawks, and Davidov and Arkov were called in to meet with Renard about their failure. During the meeting, Arkov provided Renard with the plane necessary to steal a nuclear weapon in Kazakhstan, but attempts to talk Renard out of the operation as the incident would attract unwanted suspicion, though Renard is unperturbed by this.
When being told about the failure to kill Bond, Arkov tried to put the blame on Davidov for jeopardizing the scheme, and watches in glee as Renard forces Davidov to hold a scalding hot rock in pain. However, Renard orders his bodyguard to shoot down Arkov instead of Davidov, saying that Arkov failed "his test of devotion". Renard then told Davidov to assume Arkov's identity before boarding the plane for Kazakhstan. However, Bond discovers Arkov's body in Davidov's car, realizing that Davidov is in league with Renard the whole. With that in mind, Bond follows Davidov to the airport, where he shoots him twice before assuming Arkov's identity in his place.