|Death cause:||Shot by Jack Bauer|
|First episode:||Underground #1|
|Last episode:||Underground #2|
Sasho and his partner Alik abducted Roman Vlacic, who was heavily in debt to Mishka, and brought him before their after he failed to pay up by the deadline. After learning that Roman had no money to give him, Mishka shot and killed him, then ordered Alik and Sasho to dispose of the body and tell Roman's brother Petro Vlacic that the debt was now his.
The two men visited Petro at the port in Odessa and informed him of the situation, then gave him the number for a container bearing a shipment of methylamine. Petro was to steal the chemical before it left port and then contact them on a provided cell phone. When Petro protested, the thugs beat him and warned that they would pay a visit to his wife and son should he refuse.
Later in the evening, Petro and his friend "Borys" arrived at the agreed-upon meeting place with the container. Impressed, Sasho and Alik verified that the shipment was present and undamaged, and were about to conclude matters when Mishka recognized Borys as Jack Bauer, and ordered his men to take the two hostage. (Underground #1)
Jack urged Grenkov not to kill him for he was much more valuable alive than dead, but Mishka just wanted to tortue Jack to death like what he had done to Mishka's brother and father. Held at gunpoint, a frightened Petro asked "Borys" who Jack was. Mishka accused Jack of concealing his true identity and told Petro Jack was an international fugitive. Petro was stunned by the news. As Jack tried to defend himself, he was slapped by Mishka in the face. But Jack suddenly headbutted him and attacked Sasho and Alik, and fled away with Petro in a car. Mishka sent Artur and another man to pursue them, but failed and both men were killed by Bauer.
Mishka was irate by his men's incompetence, and went to the port with Alik to find out Jack's address before sending Sasho, Uri and another man to Petro's place, attempting to take them as leverage. Jack was successful at taking out Sasho and his men, but no before Mishka tracked down his address and took his lover as a hostage. (Underground #2)