Robert_Downey_Jr. on 24 June 2017
Vader being Luke's dad is really obvious to an adult watching that film. I mean they continually hint at it in the first and second film with the way everyone reacts when he asks about his dad and how they're all worried he'll end up like him, especially in Empire.
Also Shiek being Zelda is blatantly obvious and I only played all the way through that game fairly recently (like 2011 I think).
Aerith dying is a big one as that's a seriously surprising moment
I am Iron Man
