Isaac says he and Director Bryan Singer discussed what they envisioned for the character.
"In the early conversations we talked a lot about that [Apocalypse's distinct point of view and agenda]," Isaac said. "Of course, you read the comic book, and [Apocalypse is] not so shaded with gray -- except his face. [Laughs] That's the only thing gray about him."
Isaac continued, "Just as Bryan's done with the other films, I think he seeks to find something a little more interesting than the archetypal aspects of the characters, which work really well in print, but for a film I think you want to see a bit more of the -- for lack of a better word -- humanity in [Apocalypse]; because ultimately this is a story about humans."
Isaac explained that he has been a particular fan of the Archangel storyline since he was a child. When asked if he'd like to see Ben Foster reprise his role as Angel in X-Men: Apocalypse, Isaac said he'd be game.
"He's a great actor," Isaac said. "I don't really know how they're going to put all that together or exactly what characters, or how that's going to work. But I know Angel and Archangel in particular were some of my favorite characters in that storyline. That was such a cool and dark storyline. I think that would be a cool thing to see on film."
With many considering the last installment, Days of Future Past, a reset on the X-Men film continuity, bringing in previous characters wouldn't be out of the realm of possibility.
Isaac added, "I did like that a lot... There are so many different comics, so many different storylines -- particularly with Age of Apocalypse, how there's this alternate universe. So I like that there's a malleability to what the stories can be."
The actor said that the storytelling is what is most paramount.
"Ultimately, it's about making something compelling and interesting to watch. I think being faithful to certain characters from the comics is very important, but it's a different medium," Isaac said. "I think, ultimately, you want to make a great movie. That's the most important part, and then finding, if not the exact details, the soul of the characters, of the stories, of what the whole thing was. Those aspects, even if you're moving certain things around and maybe not being true to this particular storyline and adding this new thing, I think those are much more important. The experience of it will be much more compelling in the end."
X-Men: Apocalypse hits theaters stateside on May 27, 2016.