Resident Alien is an American science fiction mystery comedy-drama television series created by Chris Sheridan, based on the comic book of the same title by Peter Hogan and Steve Parkhouse, that premiered its 10-episode first season on January 27, 2021, on Syfy.

[8] After crash-landing on Earth in a small Colorado town, an alien sent to wipe out humanity kills and takes on the identity of a vacationing physician.

[41] Upon being interviewed at a Television Critics Association panel in January 2020, he also stated that his real inspiration came from an aerial phenomenon "close encounter" he and his wife witnessed while honeymooning in the Bahamas twenty years ago.

[9] On February 28, 2019, Syfy gave a series order with production starting in Vancouver, and David Dobkin directing and serving as an executive producer for the pilot.

[8] On September 20, 2018, Alan Tudyk was cast as the main character "Dr. Harry Vanderspeigle" in the pilot, along with Sara Tomko, Corey Reynolds, Alice Wetterlund, and Levi Fiehler.

[55] Internationally, the series premiered in Canada on CTV Sci-Fi Channel on January 27, 2021,[56] and in the United Kingdom on Sky One the following day.

The website's critics consensus reads, "Resident Alien takes a minute to settle into its skin, but once it does it finds fresh humor in a familiar framework and proves a perfect showcase for Alan Tudyk's singular comedic skills".