An extraterrestrial crash-landed in Colorado, kills a vacationing physician, and assumes his identity to work at the local clinic. He struggles with his original mission to exterminate humanity but eventually develops compassion and defends Earth from other alien threats.
Core partnership evolving from reluctant observers to life-and-death allies across all seasons.
Medical professional relationship that deepens into trusted confidante and co-conspirator.
Law enforcement figure initially suspicious of Harry, later forced to cooperate against larger threats.
Town mayor whose initial political oversight transforms into pragmatic reliance on Harry.
Law enforcement deputy whose professional friction with Harry gradually shifts toward mutual support.
Mayor's spouse who transitions from skepticism to quiet support as truths emerge.
Child resident who shares occasional friendly interactions with Harry during family outings.
Explore the full interactive character relationship map of Resident Alien