While Ravil Isyanov is best known for his stint on "NCIS: Los Angeles," he had an impressive list of acting credits to his name. His career started in 1992 when he appeared in the film "Back In The U.S.S.R.," and throughout the 1990s, he had roles in "Two Deaths," "Hackers," "GoldenEye," "Bad Boys," "EastEnders," "Hamlet," "The Saint," and "The Man Who Made Husbands Jealous" (via IMDb).

Isyanov also had roles in popular television shows like "Buffy the Vampire Slayer," "JAG," "Alias," "24," "Prison Break," "Fringe," "Bones," "The Mentalist," "Burn Notice," "The Americans," "Agents of S.H.I.E.L.D.," and "GLOW," and appeared in "Transformers: Dark of the Moon" opposite Shia LaBeouf, Rosie Huntington-Whiteley, Tyrese Gibson, and Josh Duhamel. His last credited acting roles include "25 Cents Per Minute," which is currently in post-production, and the upcoming Marilyn Monroe movie, "Blonde," which stars Ana de Armas, Bobby Cannavale, Adrien Brody, and Julianne Nicholson.

Fans of the late actor shared their condolences on Twitter, with one "NCIS" fan writing, "I really liked Kirkin as a character on NCIS. It sucked when they killed him off, and it sucks even more that life is imitating art today. Safe home Ravil." Another echoed those sentiments, adding, "Very sad, he was brilliant as Kirkin fair play, loved watching him with Deeks."