I wrote the entire history of Alpha because the space station was around for 500 years. I have 30 pages on the history of Alpha. Every ten years what happens. They took control and what happened. Every 80 years, they have to change the communication system because it doesn't work anymore. Some aliens come with new technology, and suddenly you can change the electric system. We wrote the entire story [for Valerian]

Loving a film is like falling in love with a woman or with a man like you never expect it. It it's not the one you think you will be in love with, you know. You think always that he will be with a beard, and black, and big and finally he's Chinese and you know it's the same thing. There's something very organic about the film and if you forgot it, if you don't have this seed in it...this organic flavor in it the film doesn't work it's wrong.

We were so ready [with Valerian] that we were early, which is unheard of in the history of the sci-fi film.

When Cara [Delevingne] and Dane [DeHaan] arrived, I told their agent, "They need to know all this." I gave them the 600 pages. I said, "You have to learn everything. You're a cop. You need to know the names." I don't want him, when he meets an alien to go, "Whoa" like this. I want him to know if this guy is peaceful.

Sometimes I see people finish a film and they go, "Yeah, that was good. Where are we going to eat?"

I'm always attracted by people who are lost in their time. I think it helps us.

That's a KORTAN DAHUK. That's the first alien we see in the film [Valerian]. That's another artist. The first one was Chinese, the one with the space station. This one is American. Personally, that's my favorite alien. I love him. I love his profile and his face. There is such a sweetness and almost a sadness in his face.