|Michael Fassbender as David in "Prometheus"|
He said: "I didn't revisit 'Alien' before we did this. Sometimes I would do that, but in this case I didn't.
"I watched 'Blade Runner' though, I took a look at Sean Young and Rutger Hauer. I live Rutger Hauer in that.
"With 'Prometheus', it stands alone to 'Alien', the way they put it and a good description is there's DNA strands that link the two. But it's a whole new world. I play a guy called David who's an android, so that's why I watched 'Blade Runner', there's something in those androids."
The 'Shame' actor also admitted he used to use music to help him prepare for a role but now he is more "relaxed" in his technique.
He added to Esquire magazine: "I used to use music a lot. In fact, that was my main key at drama school, but I don't really do it any more.
"Now I think I'm a little bit more relaxed in my technique. Now I just try to focus and relax."
Here's Michael Fassbender as David in "Prometheus":
Here's the trailer for the movie: