Alien: Covenant - 20 Easter Eggs & References You Must See

9. The Blade Runner Running Joke

As Ridley Scott himself confirmed, he added an Easter Egg in that tied together the Alien, Prometheus and Blade Runner universes, which has been spotted as this warning signal spotted in all three movies:

"I've used something that's shown in Alien, Blade Runner, Prometheus. It's an emergency signal on the screens, which is fundamentally a screen with a big orange cross. It's in Covenant. It's in Prometheus. It's in Blade Runner. It's on the take-off, when it lifts off the ground."

Intriguingly, the new Blade Runner 2049 trailer also includes a nod back to Alien, as there appears to be an Engineer in there...