Itzin portrayed President Charles Logan on the Fox thriller.

Producer Jon Cassar remembered him as an “all around great guy.”

24actorGregory Itzinhas died at age 74.

Gregory Itzin

Actor Gregory Itzin.Jerod Harris/Getty Images

He previously had a heart attack on stage during a 2015 performance as William Shakespeare’s Falstaff.

He’ll be missed by his24family who had nothing but love & respect for him.

You made your mark, now Rest In Peace friend."

The star regularly made clear his passion for the series and the character.

In 2006, he evensubmitted a lengthy poem to EWthat he wrote about the project.

Itzin’s son, Wilke, also posted about his father’s death on Instagram.

“It is hard to put into words the life of a man lived to its fullest.

“But what many people truly knew him for was his incredible performances on the stage.