Expanding the ever-growing Alien universe with fresh layers of depth and nuance, the first two episodes — “Neverland” and “Mr. October”— are packed with references, Easter eggs, and subtle callbacks to previous films, along with clever nods to other corners of pop culture.

Both new and familiar alien lifeforms lurk around in the Disney series “Alien: Earth,” based on the original 1979 Ridley Scott "Alien" movie.