Rise to Fame
The character didn't have a name at first. Just "Agent." Clark Gregg almost passed on Iron Man (2008) because the S.H.I.E.L.D. handler had a handful of lines and zero backstory. He took it anyway, and by the time Coulson died in The Avengers (2012), fans had built a "Coulson Lives" movement loud enough to get him his own show. Agents of S.H.I.E.L.D. ran seven seasons on ABC. That's not a comeback, that's a character that outgrew the movie that killed him.
In the Spotlight
Still building a resume at 62 that has nothing to do with S.H.I.E.L.D. He turned up in Thelma at Sundance 2024, ran seven episodes of Criminal Minds: Evolution, and took three episodes of Netflix's Zero Day alongside Robert De Niro in 2025. George Clooney cast him in the Broadway production of Good Night, and Good Luck that same year. Coulson died in 2012. Gregg didn't.
Side Notes
Before Marvel made him a household face, he co-founded the Atlantic Theater Company with David Mamet and William H. Macy in 1983, wrote the screenplay for What Lies Beneath, and adapted Chuck Palahniuk's Choke into a Sundance film he also directed. He holds a black belt in Brazilian jiu-jitsu. The gap between what he's actually done and what he's known for is one of the stranger discrepancies in Hollywood.