Jeremy Strong has never had a reputation for being a lazy actor. But a new profile for GQ reveals just how committed the Succession star was his portrayal of Mark Zuckerberg in Aaron Sorkin’s upcoming The Social Reckoning. This included a 24/7 commitment to the Zuckerberg voice, even off set.

This is a level of commitment, writer Alex Pappademas explains, that Strong takes on for all of his projects. (Strong only spoke with Pappademas in a Polish accent during their interview, because he’s currently locked into his character in the upcoming series adaptation of The Boys From Brazil.) “I don’t want it to feel like an accent,” Strong says in the piece. “I want it to just be a person, and that’s their voice — and our voice is the most individual thing about us.”

Bradley Cooper, a friend of Strong’s, said “I enjoy very much talking to him when he’s in the throes of these other people… I love it. I’ve talked to Mark Zuckerberg many times — I had a whole friendship with Mark Zuckerberg, and Mark Zuckerberg has no idea.”

The article makes it clear that as method as Strong gets, his process largely boils down to intense research. It could be much worse — Jared Leto kept the crew on Morbius waiting because he insisted on using his fake crutches to use the bathroom. To play Dr. Michael Morbius.

The results of Strong’s commitment to the role of Zuckerberg will unfold when The Social Reckoning arrives in theaters on October 9th. He doesn’t seem to be upset that he was Sorkin’s second choice, after original Social Network star Jesse Eisenberg said no.