Arkov
Background
Nikoli Arkov is a Soviet double agent working for the United States. He has a daughter named Katrina who was saved by St. John when St. John got her the surgery she needed.
During the events of Airwolf: Season 4 Episode 2 Escape played by Garwin Sanford
In West Berlin, Germany, St. John and Mike Rivers meet with Arkov and convince him to try and save Jo Santini. Arkov arrives at the Stara Zagora Prison and tells the Commandant that Jo may have the stolen map information on a micro dot. Jo is brought before Arkov who slaps and searches her. Arkov tells Jo that he is working with St. John and tells her to be in the prison yard at 9 am. Later, Airwolf arrives and starts shooting up the prison. As a guard is about to shoot Jo, Arkov shoots the guard.
During the events of Airwolf: Season 4 Episode 9 Stavograd Part 1 played by Garwin Sanford
At Stavograd, Airwolf is brought into a hangar and the crew is met by Arkov. Rivers argues that they are there to help and Commander Kirov suggests a Soviet pilot use Airwolf to fly into the reactor. Uri Kolcheski offers to fly Airwolf, but Jo refuses. While they are surveying the damage to the reactor, Kirov's Aide tells Kirov, they picked up an unauthorized broadcast from Airwolf. Arkov accuses St. John and Rivers of sending classified data, but they deny it.
During the events of Airwolf: Season 4 Episode 10 Stavograd Part 2 played by Garwin Sanford
Arkov tells Jo, they need help in the infirmary. Jo angrily asks Arkov how long it will take before they trust each other. He watches the tape Airwolf recorded and sees nothing of importance on it. Arkov tells St. John and Mike that he believes them and sneaks them out. Arkov tries to escape with Jo, but is caught by Guard 1. Arkov knocks Guard 1 unconscious, while Jo knocks the another one unconscious. He walks Jo over to Guard 2 and says Jo is willing to cooperate, but he doesn't believe her and tells Guard 2 to take Airwolf out of the building. Jo and Arkov get into Airwolf and fly towards reactor 1. Jo lands Airwolf and Mike lands the jet. Kirov and the rest of the military leave and St. John has the idea to collapse the walls of reactor 1 and Bronski thinks they might be able to use coolant from reactor 3 to prevent reactor 2 from overheating. St. John and Mike manage to collapse the walls to reactor 1 and the temperature in reactor 2 drops. Jo says goodbye to Arkov and they kiss.