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.
| # | Fact |
|---|
| 1 | Along with Daniel London, he is one of only two actors to appear in both Minority Report (2002) and its television adaptation Minority Report (2015). He played a hotel clerk in the former and Charlie Peele in the latter. |
| 2 | Co-founder of Slated, the online marketplace for film finance. |
| 3 | Co-founded the Flyover Film Festival in Louisville, KY. |
| 4 | Elected to National Board of the Screen Actors Guild. [September 2007] |
| 5 | Graduate of the Joanne Baron / D.W. Brown Acting School in Santa Monica, California. |
| 6 | Last name is pronounced "MAY-pah-ther" |
| 7 | Older brother of Amy Mapother and Katherine Mapother. |
| 8 | His father, William Reibert, Sr., was an attorney and bankruptcy consultant and was a judge in Louisville, Kentucky (1967 - 1970). His mother's name is Louisa. |
| 9 | Went to St. Xavier High School in Louisville Kentucky. |
| 10 | Was a school teacher in East Los Angeles for 3 years before becoming an actor. |
| 11 | Graduated from Notre Dame with a B.A. in English. |
| 12 | Younger cousin of Tom Cruise and Lee Anne De Vette. |
| Title | Year | Status | Character |
|---|
| Constantine | 2015 | TV Series | Jacob Shaw |
| The Atticus Institute | 2015 | Dr. Henry West |
| Blackhat | 2015 | Rich Donahue |
| Catch | 2014/II | Short | Frank |
| Hawaii Five-0 | 2014 | TV Series | Eric Porter |
| The Lottery | 2014 | TV Series | Tyler Waters |
| The Mentalist | 2011-2014 | TV Series | Richard Haibach |
| I Origins | 2014 | Darryl Mackenzie |
| It's Dark Here | 2013 | David Tennies |
| Lightning Returns: Final Fantasy XIII | 2013 | Video Game | Additional Voices (voice) |
| Castle | 2013 | TV Series | Carl Matthews |
| Escape from Polygamy | 2013 | TV Movie | Ervil |
| Mad Men | 2013 | TV Series | Randall Walsh |
| Underdogs | 2013 | Bill Burkett |
| Jobs | 2013 | Calligraphy Professor |
| Ro | 2012 | TV Series | Ravi |
| American Horror Story | 2012 | TV Series | Driver |
| Hitman: Absolution | 2012 | Video Game | Hitman: Agent 47 (mocap) |
| Static | 2012/I | Greg Wagner |
| Dr0ne | 2012 | TV Series | The Supervisor (2012) |
| Burn Notice | 2012 | TV Series | Garret Hartley |
| The Secret World | 2012 | Video Game | Paul Gamelin (voice) |
| Incident on Marmont Avenue | 2012 | Short | Albert |
| FDR: American Badass! | 2012 | Dr. Ellington |
| Justified | 2012 | TV Series | Delroy Baker |
| Drew Peterson: Untouchable | 2012 | TV Movie | Glenn Levecke |
| Citizen Gangster | 2011 | Detective David Rhys |
| Portraits in Dramatic Time | 2011 | William Mapother |
| A Warrior's Heart | 2011 | Coach David Milligan |
| Another Earth | 2011 | John Burroughs |
| Darnell Dawkins: Mouth Guitar Legend | 2010 | Pastor Jenkins |
| Fallout: New Vegas | 2010 | Video Game | Colonel Hsu (voice) |
| Halo: Reach | 2010 | Video Game | Air Control / Dispatch (voice) |
| I <3 Vampires | 2010 | TV Series | William |
| Law & Order: Criminal Intent | 2010 | TV Series | John Silvestri |
| Lost | 2004-2010 | TV Series | Ethan Rom |
| The Young and the Restless | 2010 | TV Series | Gavin |
| Human Target | 2010 | TV Series | Sam Fisher |
| Hurt | 2009 | Darryl Coltrane |
| WordGirl | 2009 | TV Series | Guy Rich |
| Prison Break | 2009 | TV Series | FBI Agent Chris Franco |
| Criminal Minds | 2008 | TV Series | Ian Corbin |
| The Burrowers | 2008 | William Parcher |
| Lost: Missing Pieces | 2008 | TV Mini-Series | Ethan Rom |
| Skip Tracer | 2008 | TV Movie | Henry Hargrove Jr. |
| Viva Laughlin | 2007 | TV Series | Sweet Lenny Collins |
| K-Ville | 2007 | TV Series | Gordon Wix |
| Moving McAllister | 2007 | Bob |
| Moola | 2007 | Steve |
| Robot Chicken | 2006 | TV Series | Leprechaun #2 / Alien Bully / Billy |
| World Trade Center | 2006 | Marine Sergeant Thomas |
| The Lather Effect | 2006 | Jack |
| The Inside | 2006 | TV Series | Ronald Ewing |
| Crossing Jordan | 2005 | TV Series | Henry Bishop |
| Threshold | 2005 | TV Series | Gunneson |
| Chloe | 2005 | Short | Doctor |
| The Zodiac | 2005 | Dale Coverling |
| Lords of Dogtown | 2005 | Donnie |
| The Grudge | 2004 | Matthew |
| NCIS | 2004 | TV Series | Kyle Grayson |
| CSI: Miami | 2004 | TV Series | Pete Keller |
| Suspect Zero | 2004 | Bill Grieves |
| Line of Fire | 2004 | TV Series | Larry |
| The Kiss | 2003 | Video | Peter |
| Touched by an Angel | 2003 | TV Series | Eddie |
| Law & Order: Special Victims Unit | 2003 | TV Series | Luke Edmunds |
| The Pennsylvania Miners' Story | 2002 | TV Movie | John 'Flathead' Phillippi |
| CSI: Crime Scene Investigation | 2002 | TV Series | Douglas Sampson |
| Self Storage | 2002 | Short | Graham |
| Minority Report | 2002 | Hotel Clerk |
| Vanilla Sky | 2001 | Clubgoer (uncredited) |
| Swordfish | 2001 | Gabriel's Crew |
| In the Bedroom | 2001 | Richard Strout |
| Almost Famous | 2000 | Bartender (scenes deleted) |
| Mission: Impossible II | 2000 | Wallis |
| Magnolia | 1999 | WDKK Show Director's Assistant |
| The Unknown Cyclist | 1998 | By-Stander |
| Trickle | 1998 | Short | Josh Riddell |
| Without Limits | 1998 | Bob Peters |
| Born on the Fourth of July | 1989 | Platoon - Vietnam (as William R. Mapother) |
| The Inheritance | 2013/II | Short completed | Villem |
