
Nathan Fillion (born March 27, 1971) is a Canadian-American actor. He played the leading roles of Captain Malcolm "Mal" Reynolds on Firefly and its film continuation Serenity and Richard Castle on Castle. As of 2018, he stars as John Nolan on The Rookie and is an executive producer on the show as well as its spin-off series, The Rookie: Feds.
Fillion has acted in traditionally distributed films like Slither and Trucker, Internet-distributed films like Dr. Horrible's Sing-Along Blog, television soap operas, sitcoms, and theatre. His voice is featured in animation and video games, such as the Bungiegames Halo 3, Halo 3: ODST, Halo: Reach, Destiny, and Destiny 2, along with the 343 Industries game Halo 5: Guardians and the television series M.O.D.O.K. (2021).
Fillion first gained recognition for his work on One Life to Live in the contract role of Joey Buchanan, for which he was nominated for the Daytime Emmy Award for Outstanding Younger Actor in a Drama Series, as well as for his supporting role as Johnny Donnelly in the sitcom Two Guys and a Girl.
Description above from the Wikipedia article Nathan Fillion, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Superman
2025 · as Guy Gardner

Deadpool & Wolverine
2024 · as Headpool (voice)

Saving Private Ryan
1998 · as Minnesota Ryan

The Suicide Squad
2021 · as T.D.K.

Guardians of the Galaxy Vol. 3
2023 · as Master Karja

Cars 3
2017 · as Sterling (voice)

Monsters University
2013 · as Johnny (voice)

Night Hunter
2019 · as Quinn

Guardians of the Galaxy
2014 · as Monstrous Inmate

Serenity
2005 · as Malcolm 'Mal' Reynolds

Gravity Falls: Between the Pines
2016 · as Preston (Voice)

Slither
2006 · as Bill Pardy

Justice League: The Flashpoint Paradox
2013 · as Green Lantern / Hal Jordan (voice)

Percy Jackson: Sea of Monsters
2013 · as Hermes

Blast from the Past
1999 · as Cliff

Dracula 2000
2000 · as Father David

Super
2010 · as The Holy Avenger

Man of Tomorrow
2027 · as Guy Gardner