In an interview with ComingSoon.net, Isaac spoke a bit about Apocalypse's impressive power set.
"(The costume) hasn't been figured out yet, but one of his major powers is being able to change all the molecules in his body," Isaac explains. "So I'll be changing all the molecules in my body… It's gonna be a lot of fun."
Fans of the X-Men will likely know that this kind of molecular manipulation manifests itself in different ways, with shapeshifting and mass manipulation being among the most notable. Apocalypse will easily be the most powerful foe the X-Men have faced in film so far (I'm pretending the Dark Phoenix thing in X-Men: The Last Stand didn't happen).
X-Men: Apocalypse opens in theaters May 27, 2016.