Alexei's character is played by Alec Utgoff of Mission: Impossible — Rogue Nation and San Andreas fame. The 33-year-old Ukrainian and British actor also played Yuri in The Wrong Mans and Dmitri in Mortdecai. 

Since he is a native speaker of Russian, and fluent in Ukrainian and English, it's no surprise that he's been tasked with playing Eastern European characters for the majority of his roles. And since this might be his biggest character yet, appearing in five episodes of one of America's most beloved series, he took to Instagram to express how grateful he was. 

"Thank you everyone for your warm welcome and support!!!" he wrote as a caption, alongside a still of his character Alexei enjoying a cherry Slurpee. "I was really touched that you enjoyed our arc and resonated with the character. I tried answering as many people as I could."

"As this is quite simply impossible with my responsibilities at home, I'd like to thank you all for your kind energy in all the messages I read and in turn, I wish you all the happiness and successes in your family, professional, and personal lives. Enjoy the weekend!" The actor signed, "Love, Al."