Mark O'Brien

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Mark O'Brien

Age: 41

born May 7, 1984

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Mark O'Brien (born May 7th, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle (2010) and Tom Rendon in Halt and Catch Fire (2014).

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Top Casting Suggestions

Mark O'Brien has been suggested to play 28 roles. Click below to see other actors suggested for each role, and vote for who you think would play the role best.

Mark O'Brien

as

Vic Slaughter (Victor Slaughter)

in

Morbius

2 Yes

0 No

Morbius
Mark O'Brien

as

Q

in

Denis Villeneuve's James Bond (2020s)

2 Yes

0 No

Denis Villeneuve's James Bond (2020s)
Mark O'Brien

as

Taurus

in

Celebrity Zodiac

2 Yes

0 No

Taurus
Mark O'Brien

as

District 2 group

in

The Hunger Games: Sunrise on the Reaping

2 Yes

0 No

The Hunger Games: Sunrise on the Reaping
Mark O'Brien

as

Rob Meadows

in

The Darkest Minds

3 Yes

2 No

The Darkest Minds
Mark O'Brien

as

Liam (The Chauffer)

in

Parasite (American)
View Suggestion

Parasite (American)
Mark O'Brien

as

Hourman III (Matthew Tyler)

in

Justice League
View Suggestion

Justice League
Mark O'Brien

as

Hourman III (Matthew Tyler)

in

Justice Society of America
View Suggestion

Hourman III
Mark O'Brien

as

Ron Wagner

in

Crash Landing On You

1 Yes

0 No

Crash Landing On You
Mark O'Brien

as

Friend

in

It Kills

1 Yes

0 No

It Kills
Mark O'Brien

as

Frank Olson

in

Idle Bodies

1 Yes

0 No

Idle Bodies
Mark O'Brien

as

Ian McCarthy

in

Dcu (Dc Universe)

1 Yes

0 No

Dcu (Dc Universe)
Mark O'Brien

as

Edward Whalen (Vermin)

in

Drew Goddard's The Spectacular Spider-Man

1 Yes

0 No

Drew Goddard's The Spectacular Spider-Man
Mark O'Brien

as

Human Glen

in

Seed of Chucky (2024)

1 Yes

0 No

Seed of Chucky (2024)
Mark O'Brien

as

Parasite (Rudy Jones)

in

My DC Universe

1 Yes

0 No

My DC Universe
Mark O'Brien

as

David Shelton (Chris and Scott's ex-best friend, he came out as gay and is engaged)

in

The Strangers: Home Invasion (2023)

1 Yes

0 No

The Strangers: Home Invasion (2023)
Mark O'Brien

as

Derrick Reed

in

Scream 7

1 Yes

0 No

Scream 7
Mark O'Brien

as

Officer Conan Clarkson

in

City of Terror: Strings of Darkness - Season 6
View Suggestion

City of Terror: Strings of Darkness - Season 6
Mark O'Brien

as

Officer Conan Clarkson

in

City of Terror: Strings of Darkness - Season 7
View Suggestion

City of Terror: Strings of Darkness - Season 7
Mark O'Brien

as

Officer Conan Clarkson

in

City of Terror: Strings of Darkness - Season 8
View Suggestion

City of Terror: Strings of Darkness - Season 8
Mark O'Brien

as

Officer Conan Clarkson

in

City of Terror: Strings of Darkness - Season 9
View Suggestion

City of Terror: Strings of Darkness - Season 9
Mark O'Brien

as

Sergeant Conan Clarkson

in

City of Terror: Strings of Darkness - Season 10
View Suggestion

City of Terror: Strings of Darkness - Season 10
Mark O'Brien

as

Oscar (Olivia's boss)

in

Why Don't You Just Die?! (American remake)

1 Yes

0 No

Why Don't You Just Die?! (American remake)
Mark O'Brien

as

Alex Le Domas (Grace's ex-husband, cameo)

in

Ready or Not Part 2

1 Yes

0 No

Ready or Not Part 2

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