15 Best Supporting Characters In Sci-Fi Movies

15. David 8 - Prometheus

First appearing in 2012's Prometheus, David 8 is an android working as a butler and maintenance man aboard the Prometheus.

He serves as a non-human voice among the ship's human crew, providing an interesting perspective on the events of the Alien prequel.

David drives much of the plot in his role of surrogate son to the aging Peter Weyland as well as linguistics expert, and Fassbender delivers an excellent performance as the decidedly creepy android.

One of only two crew members to survive the events of Prometheus, David proves to be more cunning that one would expect from an android, giving him yet another subtly human trait that drives viewers' curiosity.

Fassbender claims to have based his performance on T.E. Lawrence, the real life Lawrence of Arabia, as well as drawing inspiration from the replicants of Blade Runner and David Bowie in The Man Who Fell to Earth.

Fassbender reprised the role in 2017's Alien: Covenant.