If they did, the show would be far poorer for their absence.

Even their behaviors and preferred methods of human study have been carried over intoResident Alien.

So, this explains why they spend the majority of their time in orbit.

Resident Alien Season 3 Poster Showing Alan Tudyk Flipping Off UFOs

One ofResident Alienseason 3’s biggest twists involves the Greys' plans to terraform the Earth.

Plus, theResident Alienseason 3 finale revealsEarth’s moon has always been a huge Grey ship.

He reprises the role twice more in season 2.

Custom Resident Alien image of Alan Tudyk as Harry Vanderspeigle with Greys in the background

Custom Image by Daniel Bibby

A Grey alien looks down at a trapped Ben (Levi Fiehler) in Resident Alien

A television adaptation of the comic book series, Resident Alien is a sci-fi comedy that stars Alan Tudyk as an alien who crashes on Earth with one mission - destroy humanity to save the planet. When Tudyk’s character takes the identity of a doctor, he arrives at a small town and begins to act the role preparing his plan. As time passes, he develops human emotions against his will - but his plans are further complicated when he meets the son of the mayor - who can see his actual appearance.

A group of Grey Aliens all huddled together in Resident Alien

Custom Resident Alien image of Alan Tudyk as Harry Vanderspeigle

Headshot Of Alan Tudyk In The 2024 Astra TV Awards at Millennium Biltmore Hotel

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Resident Alien