Prof Korolev was part of the Russian Power Project Soyuz. After the collapse of the USSR and shortly after the disappearance of subject 5, Korolev disappeared and took subject 3 with him. Korolev eventually goes to work for Corvin 8 years ago. Records become a bit dodgy at this point and it seems that the New KGB were struggling to track Korolev as he’s moved around various Corvin facilities until 3 years ago he settled into a role at a facility in the Midwest of America. A month ago that facility was attacked by unknown agents and Korolev was moved back to Dominion City. It seemed like he was meeting with higher ups quite a lot and there’s speculation that a new facility was being set up for him. It seems that the New KGB wanted him back because they’ve been unable to recreate Korolev’s research. They’re also quite interested in what work he’s done for Corvin as well as it doesn’t represent the work he had with them, or anything he proposed.