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Leigh Whannell (/ˈli ˈwɑːnɛl/; born 17 January 1977) is an Australian filmmaker and actor. He has written multiple films that were directed by his friend James Wan, including Saw (2004), Dead Silence (2007), Insidious (2010), and Insidious: Chapter 2 (2013). Whannell made his directorial debut with Insidious: Chapter 3 (2015) and has since directed three more films, Upgrade (2018), The Invisible Man (2020) and Wolf Man (2025). Whannell and Wan are the creators of the Saw franchise. Whannell wrote the first installment, co-wrote the second and third installments, was the producer or executive producer for all the films, and appeared as the Adam Stanheight character in three of the installments. He was also the writer of the Saw video game (2009) and co-writer of the film Cooties (2014). Description above from the Wikipedia article Leigh Whannell, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Legacy of Screams: The Evolution of Horror Movies
as Self - (archive footage)

Wolf Man
as Dan (voice)

Insidious: The Red Door
as Specs

Director’s Journal: Making The Invisible Man
as Self

Aquaman
as Cargo Pilot

Insidious: The Last Key
as Specs

78/52
as Self

Keep Watching
as Matt

The Bye Bye Man
as Larry Redmon

Game Changer: The Legacy of Saw
as Self

Lavalantula
as Darren

Insidious: Chapter 3
as Specs

Cooties
as Doug

The Mule
as Gavin Ellis

Insidious: Chapter 2
as Specs

Raze
as Security Guard

The Pardon
as Clement Moss

Crush
as David

The Debt Collector
as Donovan

Dick Elves
as Larry

Insidious
as Specs

Saw 3D
as Adam Stanheight (archive footage) (uncredited)

Legend of the Guardians: The Owls of Ga'Hoole
as Jatt (voice)

The Last Supper
as Phillip

Doggie Heaven
as Neil

Not Quite Hollywood
as Self

Dying Breed
as Matt

30 Even Scarier Movie Moments
as Self

Death Sentence
as Spink

The Making of Dead Silence
as Self

Making of Saw III
as Self

Saw III
as Adam Radford

Full Disclosure Report
as Adam Faulkner-Stanheight

Saw II
as Adam Stanheight (voice) (uncredited)

Hacking Away at Saw
as Self

Saw
as Adam Radford

One Perfect Day
as Chris

Saw
as David

Razor Eaters
as Nick D.

The Matrix Reloaded
as Axel

The Referees
as Footy Mate

The PhanDom Menace
as Self

Stygian
as Clown / Punk Kid

Recovery
as Self

Blue Heelers
as Jared Ryan