When Bryan Singer was sked about the new cast — or the “old” cast, given the film’s 1960s setting — he got specific about his favorites. “We have younger versions of Mystique and Beast, so I’m very excited about them and what they bring to the film. Jennifer Lawrence’s work [as Mystique] and Nicholas Hoult’s portrayal of Beast — these are characters that we’ve seen in the earlier films, but then these are very different portrayals and you have to bring a lot of attention to those.”
“I’m also excited about Jason Flemyng as Azazel, which is a really cool character. It’s like this sinister alter ego of Nightcrawler in a way, which again brings some of the things that we like about that character but at the same time has a different quality."
When asked about the specific relation between Havok and Cyclops:
“Yes, the timeline is different,” Singer said. “It wouldn’t physically fit for him to be the brother of Cyclops. We take some liberties on that. There are notions, but, um, I don’t want to give away certain interrelations, but let’s just say there are some things that do adhere to the comic books and do so in a way the fans will get a kick out of. And those things can, perhaps, move forward into the future…. That’s one reason we wanted to call the film ‘First Class’ even though it isn’t the [Jeff Parker-penned story arc called] ‘First Class’ in the comics as fans know it. You couldn’t really tell that story without going even earlier and explaining how they got there and how it came to be. I liked the title, so we kept it, but this is a prelude in a way that will eventually lead to the [scenarios] that fit in more clearly with the ‘First Class’ comics and situations.”