Update David McCallum, who played Russian agent Illya Kuryakin opposite Vaughn on The Man From U.N.C.L.E, released a statement about his friend and former costar. “I just heard the news and I’m utterly devastated. Robert and I worked together for many years and losing him is like losing a part of me. My deepest sympathies go out to Linda and the Vaughn family.”

Previous Robert Vaughn, who died of leukemia today at 83, is being remembered on social media by fans and colleagues in and out of Hollywood, particularly from the U.K. The star of The Man From U.N.C.L.E., The Magnificent Seven and Britain’s Hustle and Coronation Street, was, in the words of Shaun of the Dead creator Edgar Wright, “the coolest guy on TV.”

RIP Robert Vaughn. An urbane and polished actor who graced a number of my childhood favorites. Thank you for the inspiration to class, sir. — Lou Diamond Phillips (@LouDPhillips) November 11, 2016

Had the pleasure of sharing the screen with the legendary Robert Vaughn. Such an honour. — Lee Ingleby (@leeingleby) November 11, 2016

Had the pleasure of working with the legendary #RobertVaughn on an Ep of #Hustle. Remember his professionalism shining through. Lovely man X — Daniel Mays (@DanielMays9) November 11, 2016

Sorry to hear the news about Robert Vaughn. — Sir Roger Moore (@sirrogermoore) November 11, 2016

RIP Napoleon Solo! The great Robert Vaughn was the coolest guy on TV when I was a kid. Superb in Bullitt, The Magnificent Seven & many more. pic.twitter.com/h7AzfN2pt0 — edgarwright (@edgarwright) November 11, 2016

The last of the original Magnificent Seven is gone. RIP Robert Vaughn. https://t.co/54sCtEWQLU — Michael McKean (@MJMcKean) November 11, 2016

Oh no. Robert Vaughn, such a fine actor, one of the best Columbo villains (no higher praise than that) & an utterly charming man, has died. — Stephen Fry (@stephenfry) November 11, 2016