Real world article
(written from a production point of view)
Eric "Shamm" Watson is a stuntman, stunt actor, and martial artist who played a Coppelius android in the Star Trek: Picard first season episode "Et in Arcadia Ego, Part 2" and a Changeling (posing as a USS Titan crewmember) in the third season episode "No Win Scenario". He received no credit for his appearances.
Watson performed stunts in numerous television series, including Criminal Minds, CSI: Cyber, Agents of S.H.I.E.L.D., Snowfall, Lethal Weapon (with Wallace Langham), S.W.A.T., American Horror Story, True Detective, NCIS: Los Angeles (with Miguel Ferrer, Pasha Lychnikoff, and Dina Meyer), and Westworld (with Clifton Collins, Jr.). He also appeared as a stunt actor in the superhero films Black Panther (2018) and Captain Marvel (2019).