(written from a Production point of view)
This page contains information regarding Star Trek: Picard, and thus may contain spoilers.
James Nicholas Callis (born 4 June 1971; age 51) is a British actor who portrayed Maurice Picard, and an illusory Starfleet psychiatrist in his image, in the Star Trek: Picard episodes "The Star Gazer", "Monsters", and "Hide and Seek".
Callis is best known for playing Dr. Gaius Baltar in Ronald D. Moore's 2004 reimagining of Battlestar Galactica (with Karen Austin, Bruce Davison, Michelle Forbes, Paula Malcomson, Brian Markinson, John Pyper-Ferguson, Rekha Sharma, Mark A. Sheppard, Dean Stockwell, Kate Vernon, Nana Visitor, Sam Witwer, and Rick Worthy). He also appeared in the television series 12 Monkeys (created by Terry Matalas).