Keir David Peters Gilchrist (born 28 September 1992) is a Canadian actor and musician. On television, he portrayed Marshall Gregson on the Showtime comedy-drama United States of Tara (2009–2011) and headlined the Netflix comedy-drama Atypical (2017–2021). His film roles include the comedy-drama It's Kind of a Funny Story (2010) and the supernatural horror It Follows (2014). Outside of his acting career, Gilchrist is the vocalist of grindcore band Whelm and death metal band Phalanx.
Known For
Dead Silence
(2007)
Young Henry
It Follows
(2015)
Paul
The Rocker
(2008)
Moby Type Kid
It's Kind of a Funny Story
(2010)
Craig Gilner
Flashback
(2020)
Andre
The Stanford Prison Experiment
(2015)
John Lovett
Tales of Halloween
(2015)
The Stranger
The Good Neighbor
(2016)
Sean
Saint Ralph
(2005)
Kid Collins
Freaky Tales
(2024)
Josh
The Heyday of the Insensitive Bastards
(2015)
Michael
Samantha: An American Girl Holiday
(2004)
Factory Boy
Full Filmography
Acting
Samantha: An American Girl Holiday
(2004)
Factory Boy
The Sadness of Johnson Joe Jangles
(2004)
Clint the Boy Doctor
The Right Way
(2004)
Young David
Saint Ralph
(2005)
Kid Collins
A Lobster Tale
(2006)
Mike Stanton
Dead Silence
(2007)
Young Henry
The Rocker
(2008)
Moby Type Kid
Hungry Hills
(2009)
Snit
It's Kind of a Funny Story
(2010)
Craig Gilner
Just Peck
(2011)
Michael Peck
Matty Hanson and the Invisibility Ray
(2011)
Matty Hanson
Seasick Sailor
(2013)
Penna
It Follows
(2015)
Paul
Dark Summer
(2015)
Daniel
Len and Company
(2015)
William
The Stanford Prison Experiment
(2015)
John Lovett
Share
(2015)
Dylan
The Heyday of the Insensitive Bastards
(2015)
Michael
Tales of Halloween
(2015)
The Stranger
Smoke
(2015)
Michael
The Good Neighbor
(2016)
Sean
The Elvis Room
(2016)
Kurt
Pisces
(2017)
Alex
Heartthrob
(2017)
Henry Sinclair
Los
(2017)
Left
Katie Says Goodbye
(2018)
Matty
Flashback
(2020)
Andre
Castle in the Ground
(2021)
Polo Boy
An Intrusion
(2021)
Layne
The Featherweight
(2023)
Billy Papaleo Jr.
Freaky Tales
(2024)
Josh