William Mapother

1965 (61) • Acting

Born: 4/17/1965 (61) in Louisville, Kentucky, USA

Known for: Acting

William Mapother

William Reibert Mapother Jr. (/ˈmeɪpɒθər/; born April 17, 1965) is an American actor, known for his role as Ethan Rom on the television series Lost and starring in the film In the Bedroom. He is also known for the film Another Earth.

Known For

American Horror Story

81%

Driver

2011

Lost

80%

Ethan Rom

2004

The Mentalist

84%

Richard Haibach

2008

Supergirl

73%

Dr. Rudy Jones / Parasite

2015

Law & Order: Special Victims Unit

80%

Luke Edmunds

1999

Criminal Minds

83%

Ian Corbin

2005

The Blacklist

76%

Bill

2013

Grimm

83%

Dwight Eleazer

2011

The Leader

Reverend Applewhite

2026

Suits LA

68%

Greg Fisher

2025

Outlaw Posse

47%

Angel

2024

Black Girl Missing

73%

Russell

2023

On Sacred Ground

53%

Daniel McKinney

2023

On Sacred Ground

53%

Writer

2023

Son of Monarchs

55%

Bob

2021

Son of Monarchs

55%

Co-Executive Producer

2021

A Little Dream

Wayne

2021

9-1-1: Lone Star

80%

Bruce Ackerman

2020

FBI: Most Wanted

76%

Travis Russell

2020

MacGyver

73%

The Client / Daniel Holt

2016

Tell Me How I Die

54%

Dr. Jerrems

2016

Rush Hour

53%

Principal

2016

Supergirl

73%

Dr. Rudy Jones / Parasite

2015

Minority Report

59%

Charlie Peele

2015

Powers

67%

Todd Secor

2015

Blackhat

55%

Rich Donahue

2015

The Atticus Institute

58%

Dr. Henry West

2015

Constantine

78%

Jacob Shaw

2014

American War Generals

Self - Narrator

2014

I Origins

76%

Darryl Mackenzie

2014

Drew Peterson: Untouchable

53%

Glenn Levecke

2014

The Blacklist

76%

Bill

2013

Escape from Polygamy

67%

Ervil

2013

Underdogs

56%

Bill Burkett

2013

Jobs

61%

Calligraphy Professor

2013

It's Dark Here

20%

David Tennies

2013