Movies:
* The Fifth Element (1997) - He played the iconic role of "The Supreme Being" and also contributed to the film's makeup design.
* The Chronicles of Narnia: The Lion, the Witch and the Wardrobe (2005) - He played the role of "Mr. Tumnus"
* Dark Shadows (2012) - He played the role of "Dr. Jules Crane"
* The Grand Budapest Hotel (2014) - He played the role of "The Cop at the Border"
* The Martian (2015) - He played the role of "Rich Purnell"
* The Book of Henry (2017) - He played the role of "Mr. Henry Carpenter"
Television:
* The Adventures of Brisco County, Jr. (1993-1994) - He played the recurring role of "The Great Santini"
* Star Trek: Voyager (1995-2001) - He played the recurring role of "The Borg Queen"
* The X-Files (1993-2016) - He played the role of "The Cigarette Smoking Man" in various episodes
* Lost (2004-2010) - He played the recurring role of "Ilana Verdansky"
* Grimm (2011-2017) - He played the role of "The Wesen" in several episodes
* The Blacklist (2013-present) - He played the role of "The Red King" in several episodes
* American Horror Story: Apocalypse (2018) - He played the role of "The Antichrist"
Other:
* The Adventures of Brisco County, Jr. (1993-1994) - He also served as a makeup artist for the show
* The X-Files (1993-2016) - He also contributed to the series' makeup design
This is just a selection of his work, and he has appeared in many other films, television shows, and theatre productions. His versatility and talent are evident in the range of roles he has taken on throughout his career.