William Mapother

William Mapother is one of those actors who makes you feel genuinely uneasy in the best possible way — the man was born to play characters who are wrong in ways you can't quite put your finger on. His turn as Ethan Rom on Lost is legitimately one of the creepiest recurring performances in prestige TV history; he barely said a word and still managed to make every scene feel like a threat. But he's more than a villain-for-hire: In the Bedroom showed real dramatic depth, and Another Earth leaned into a quieter, more haunted register that he nailed completely. A Notre Dame-educated guy from Louisville who never became a household name despite having genuine chops — I think he's exactly the kind of actor serious film people appreciate far more than casual audiences do, and honestly that feels right for him.

This take was written by generative AI, one per person, from publicly reported facts (editorial policy). It is a reading of the record, not reporting.

Name (English)

William Mapother

Name (Japanese)

ウィリアム・メイポーザー

Reading

うぃりあむ・めいぽーざー

Born

April 17, 1965 (age 61)

Origin

Louisville, Kentucky, United States

Occupation

actor / teacher / film actor / television actor

Zodiac / Chinese zodiac

Aries / Snake

High school

St. Xavier High School

University

University of Notre Dame

• Official sitehttps://williammapother.com/
• Wikipedia (English)https://en.wikipedia.org/wiki/William%20Mapother
• Wikipedia (Japanese)https://ja.wikipedia.org/wiki/%E3%82%A6%E3%82%A3%E3%83%AA%E3%82%A2%E3%83%A0%E3%83%BB%E3%83%A1%E3%82%A4%E3%83%9D%E3%83%BC%E3%82%B6%E3%83%BC
• Wikidatahttps://www.wikidata.org/wiki/Q318231

Tags

• Kentucky
• actor
• teacher
• film actor

Last updated

October 18, 2026

Only publicly available facts are listed; non-public or unconfirmed items are omitted. Base data was compiled from Wikidata from June 2026 onward; ages are recalculated daily and deaths are checked against Wikidata on an ongoing basis. English text is machine-assisted (facts translated by Sonnet, "My Take" written by Opus 4.8). The Japanese page is the source of record.