'Alien: Romulus' director Fede Álvarez and stars Cailee Spaeny, Isabela Merced, David Jonsson, Spike Fearn and Archie Renaux sit down with THR at San Diego Comic-Con to dish all about their new movie. Fede Álvarez compares this new film to Ridley Scott's 'Alien,' the cast talk about their bond off set and more.