
Peter Frederick Weller (born June 24, 1947) is an American film and stage actor, director and lecturer.
He is best known for his roles as the title character in the first two RoboCop films and Buckaroo Banzai in the cult classic The Adventures of Buckaroo Banzai Across the 8th Dimension. He received an Academy Award nomination for his direction for the 1993 short Partners, in which he also acted. He also hosted the show Engineering an Empire on the History channel. He played Stan Liddy in the 5th Season of the Showtime original series, Dexter.

Star Trek Into Darkness
2013 · as Admiral Alexander Marcus

RoboCop
1987 · as Officer Alex J. Murphy / RoboCop

Bang
2025 · as Morgan Cutter

The Adventures of Buckaroo Banzai Across the 8th Dimension
1984 · as Buckaroo Banzai

RoboCop 2
1990 · as RoboCop

Batman: The Dark Knight Returns, Part 2
2013 · as Batman / Bruce Wayne (voice)

Batman: The Dark Knight Returns, Part 1
2012 · as Batman / Bruce Wayne (voice)

Leviathan
1989 · as Steven Beck

The Order
2003 · as Driscoll

Naked Lunch
1991 · as Bill Lee

Skin Trade
2014 · as Costello

The Adventures of Cliff Booth
2026

Prey
2007 · as Tom Newman

The Poseidon Adventure
2005 · as Captain Paul Gallico

ivans xtc.
2000 · as Don West

Mighty Aphrodite
1995 · as Jerry Bender

Batman: The Dark Knight Returns
2013 · as Bruce Wayne / Batman (voice)

Beyond the Clouds
1995 · as Husband