Daily Dead has posted their interview with Ana Lily Amirpour from Fantastic Fest. When asked about the cast, she said the following about Keanu:
And Keanu—fuck, dude. What a fucking brilliant and underrated guy. Yeah, The Dream is a tricky character because you could cast the wrong person, and it would really become a sinister and dark thing. Not that this character doesn’t have sinister elements, but he’s got a very convincing logic, unarguable logic, really, and he never forces anyone to make choices they don’t want to. You cannot argue with the man and his logic, and I find people like that very interesting. So it had to be someone who’s good, through and through, deep down to the fucking core, and Keanu is that kind of good.