Actor Gregory Itzin died Friday due to complications during an emergency surgery. Itzin’s death was announced by his son Wilke on Instagram and confirmed by a spokesperson, along with Jon Cassar who was a director and producer on the hit action-drama series 24. You may or may not easily recognize the name, but who can forget the face of one 24’s most villainous yet enjoyable characters? Gregory Itzin was extremely popular due to his role as President Charles Logan, a constant thorn in agent Jack Bauer’s side.

In 2015, Itzin suffered a major heart attack while performing Shakespeare on stage and “came back only to continue to thrive in theatre, film, and TV.”

Itzin was a Top-Notch Character Actor Who Appeared in Numerous Productions

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A native of Washington, DC, and trained at the American Conservatory Theater in San Francisco, Itzin’s legacy began in the late 1970s and early 1980s, starting with small guest roles on series like Charlie’s Angels and Santa Barbara. The actor has popped up in the Star Trek universe: Star Trek: Deep Space Nine, Star Trek: Voyager, and Star Trek Enterprise. He’s also had guest roles on The Mentalist, NCIS, MacGyver, Murder One, and a recurring part on Friends as Theodore Hannigan, the father of Paul Rudd’s Mike Hannigan. Itzin was also nominated for a Tony Award for his performance in The Kentucky Cycle and has starred in such films as Lincoln and Fear and Loathing in Las Vegas. However, it was his work as the treacherous President Charles Logan that really transformed his career and earned him two Emmy nominations. In 2006, Itzin even wrote a poem, “An ode to 24,” about the series which reads in part:

THE PREZI am the President of the United States,And no one dare say me nay.I am the President of the United States,If only for a very long day.I set the wheels in motion,I am the primo mobile,I am the President of the United States,So get the hell out of my way.

Gregory Itzin is survived by his wife of 43 years Judie, son Wilke, daughter Julia, and grandson Wylder Gregory. According to the family statement, he spent his final days in the Midwest with his sister Pamela and niece and nephew, Deidre and Aaron, and great-niece and nephew, Claire and Cole, along with his son and grandson. R.I.P. Gregory Itzin.