Oleg Volkov

Oleg is laconic, reasonable, and has few strong attachments. He is primarily characterized by thoughtless dog-like devotion, which often conflicts with his desire to control the situation. If in "The Game" he does not voice any claims to Sergei, even if they arise, then in "The Plague Doctor" he begins to openly object to him when necessary.

Oleg's former colleagues consider his work for Razumovsky to be madness, to which he replies that they "think too highly of him."

Between "The Game" and "The Plague Doctor"
Oleg's survival was fortunate—the bullets missed his vital organs. However, the gunfire punctured his lungs and damaged his right collarbone, and botched intubation during surgery damaged his vocal cords.

After the events in Siberia, Razumovsky is taken away by helicopter by special forces, but Oleg, who is killing soldiers (Time of the Raven), is waiting for them in the cabin. Oleg takes Sergei to Syria and locks him in a basement, fearing the return of his "evil" subpersonality. He then transports Sergei to Germany, where he rents a house from an old man near Cologne. Oleg finds the pills prescribed for Sergei by Dr. Rubinstein, but they only make him worse. He then begins searching for information about the doctor and, after stumbling upon suspicious complaints from patients, decides to speak with him in person. In St. Petersburg, Oleg ambushes Rubinstein as he escapes a burning hospital, shoots him with a dart laced with a tranquilizer, and kidnaps him to an abandoned mansion, where he demands full information about Sergei's "treatment." Soon, a squad of mercenaries breaks into the building and takes the doctor away. Oleg only manages to throw a grenade after them.

When Sergey recovers, they fly from Germany to America, and from there to Mexico. In Cancun, the men visit a casino, where Oleg takes advantage of his exceptional luck to win big, winning repeatedly. The casino manager orders them stopped, and security guards engage in a shootout. Sergey and Oleg manage to neutralize the attackers and reach the airport, where they use fake passports to travel to St. Petersburg.

Game
Having stolen a cell phone from his psychiatrist, Razumovsky contacted Oleg and hired him to secure his own release. Volkov and four of his assistants arrived at the pretrial detention center in a paddy wagon, posing as guards transporting prisoners. When a prison guard demanded the "new arrivals"' documents, Oleg shot him. Killing the guards, the mercenaries reached the room where Razumovsky was interviewing the psychiatrist. Oleg entered and handed Sergei new clothes. Then he led him outside and put him in a helicopter, where he told him he had assembled a team of fifteen people. He then received his first assignment. Later, Oleg infiltrated Igor Grom's birthday party and planted a box containing a phone number among the gifts. He used it to contact Razumovsky.

Some time later, Volkov accompanied Sergei on a plane to Europe. During the flight, Razumovsky purchased a palace in Venice, where they stayed. Upon arrival, Volkov asked Sergei if he truly wanted revenge and received an affirmative answer.

Later, Volkov took the people present at Grom's birthday party hostage and took a photo with them. He also visited Dubin's apartment and kidnapped Margo. He then put bags over the hostages' heads and delivered them to Sergey. The mercenary also handed him the crow. Razumovsky greeted the hostages and took Yulia's hand. She punched him in the face, for which the mercenary Maxim immediately subdued her. Sergey ordered Oleg not to let his men engage in such acts of improvisation in the future. After their conversation, Volkov separated the hostages into their rooms.

That night, Oleg guarded Sergei's rest and inquired about his condition when he awoke in a cold sweat from yet another nightmare. He offered his help, but Razumovsky refused. Then Oleg brought Alexey and Ivan into the room and was present during their conversation with Sergei.

Then the Player called him and said that some suspicious guy from St. Petersburg was looking for Volkov. Oleg replied that he would deal with him himself. He soon met with the Player and learned from him

Volkov. Hell
In 2012, Oleg leads a team of mercenaries to recapture a hostage diplomatic mission in Syria. He recruits Vadim, a man known for his escapades, but Oleg hopes to keep his friend under control. The mercenaries rescue the Italian and German ambassadors, but discover that the Russian ambassador is being held in the city palace. During the assault on the palace, Vadim kills the ambassador—it turns out he had been hired. Oleg orders Vadim to get lost. The rescued Italian ambassador promises to keep quiet about the incident and, if fate brings Oleg to Italy, to help him there as well.

Past
Oleg Volkov is the same age and an old friend of Sergei Razumovsky, having grown up with him in an orphanage. After leaving the orphanage, Oleg enrolled in university to study economics, but dropped out midway through his first year and joined the army, where he transferred to the special forces in his second year. After leaving the army, he continued his service but soon retrained as a mercenary. He participated in several major military operations around the world. He is acquainted with Vadim, Joshua Donato, and Jesse Rodriguez. Before working for Razumovsky, Oleg had rarely been involved in criminal activity and was not officially considered a criminal.

For as long as he can remember, Oleg has been both a "loser and a lucky one": he will always take the slightest chance, no matter how good or bad.