- Michael Gor
- Â Dr. Sergey Butenko unknown episodes
- Elena Ksenofontova
- Â Zhanna Streshinskaya unknown episodes
- Tatyana Arntgolts
- Â Anya Galkina unknown episodes
- Dmitriy Maryanov
- Â Mikhail Kovalenko unknown episodes
- Alisa Grebenshchikova
- Â Lab Assistant Lena unknown episodes
- Mariya Anikanova
- Â Tamara Sorokina unknown episodes
- Andrey Sokolov
- Â Viktor Streshinskiy unknown episodes
- Leonid Kulagin
- Â Dr. Igor Shokhin unknown episodes
- Sergey Yushkevich
- Â Bodyguard Trofim unknown episodes
- Sergey Afanasev
- Â Boris Gerashchenko unknown episodes
- Aristarkh Livanov
- Â Professor Leonid Tsianovskiy unknown episodes
- Marina Golub
- Â Dr. Lidiya Shevtsova unknown episodes
- Anton Makarskiy
- Â Pavel Zaslavskiy unknown episodes
- Aleksandr Nikulin
- Â Major Talgat Karimov unknown episodes
- Aleksandr Zhogol
- Â Yura Krishchev unknown episodes
- Irina Lachina
- Â Sheyla unknown episodes
