Sean Astin

Sean Astin

CountryUnited States United States
GenderMale
BirthdayFeb 25, 1971
BiographySean Patrick Astin (né Duke; born February 25, 1971) is an American actor and trade union leader, who serves as the 4th national president of SAG-AFTRA. He began his career as a child actor, making his film debut as Mikey Walsh in The Goonies (1985), followed by significant roles as Billy Tepper in Toy Soldiers (1991), Dave Morgan in Encino Man (1992), Daniel Ruettiger in Rudy (1993), and Samwise Gamgee in The Lord of the Rings trilogy (2001–2003).

He is known to television audiences for portraying Lynn McGill on the fifth season of 24 (2006), the voice of Oso in Special Agent Oso (2009–2012), the voice of Raphael on Teenage Mutant Ninja Turtles (2012–17), and Bob Newby on the second season of Stranger Things (2017).

Astin's acting awards include a Screen Actors Guild Award and two Young Artist Awards. He was also nominated for the Academy Award for Best Live Action Short Film in 1994 for the short film Kangaroo Court. Astin is the son of actress Patty Duke and was adopted in 1972 by her then-husband, actor John Astin.

Astin ran for president of SAG-AFTRA in 2025 and was elected for a two-year term. His term began in September 2025.

Biography from the Wikipedia article Sean Astin. Licensed under CC-BY-SA. Full list of contributors on Wikipedia.

Known For

Haha, You Clowns
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Haha, You Clowns

as Sean Astin
Stranger Things
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Stranger Things

as Bob Newby
Bunnicula
Ended

Bunnicula

as Chester
Hercules
Ended

Hercules

as Linus
Into the West
Ended

Into the West

as Martin Jarrett
Kung Fu Panda: The Dragon Knight
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Kung Fu Panda: The Dragon Knight

as Master Sloth
Love Comes Softly
Ended

Love Comes Softly

as Mayor Wayne
No Good Nick
Ended

No Good Nick

as Ed
Playing With Power: The Nintendo Story
Ended

Playing With Power: The Nintendo Story

as Narrator
Special Agent Oso
Ended

Special Agent Oso

as Special Agent Oso
Teenage Mutant Ninja Turtles
Ended

Teenage Mutant Ninja Turtles

as Raphael
Terry Pratchett's The Colour of Magic
Ended

Terry Pratchett's The Colour of Magic

as Twoflower
The Epic Tales of Captain Underpants
Ended

The Epic Tales of Captain Underpants

as Narrator
The Epic Tales of Captain Underpants in Space!
Ended

The Epic Tales of Captain Underpants in Space!

as Narrator
The Strain
Ended

The Strain

as Jim Kent
The Witches of Oz
Ended

The Witches of Oz

as Frack

Part of Crew

Playing With Power: The Nintendo Story
Ended

Playing With Power: The Nintendo Story

as Executive Producer

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