Oscar Issac spoke to IGN recently on his role as Apocalypse in [X-Men: Apocalypse](tag:1194267) opening in theaters May 27, 2016. He gave us some insight as to how Apocalypse gathers his "Horsemen" and compares the danger En Sabah-Nur creates to being "biblical."
Arguably one of the biggest mutant threats to mankind, En Sabah Nur displays a will to enslave mankind far greater than even Magneto himself. His powers are "god-like," causing many to have worshipped him like a deity.
Living a life that spans over five thousand years, En Sabah Nur will test a more seasoned Charles Xavier, played by James McAvoy, and push Professor X to his limits. Here is a brief origin provided by Wikipedia;
"The being who would later be called Apocalypse was born 5000 years ago in Aqaba. He is born with the mutant X-gene, possibly the first living being on Earth to possess the gene, and a side-effect of this gives him gray skin and blue lips. Because of this, his people abandoned him as an infant. He is rescued by Baal of the Sandstormers who sees the child's potential power and will to survive. Baal names him En Sabah Nur or "The First One." The Sandstormers live by the credo of survival of the fittest, believing that only those who are strong enough to survive hardship and direct conflict are worthy of life.
Around this time, the time-traveller Kang the Conqueror arrives in Egypt and assumes the identity of Pharaoh Rama-Tut. Knowing who En Sabah Nur is fated to become and where he is, Rama-Tut sends his General Ozymandias and an army to destroy the Sandstormers and find the young Apocalypse. En Sabah Nur and Baal are injured and seek refuge in a cave. Before he dies, Baal reveals advanced alien technology hidden in the cave, left behind by the god-like aliens known as Celestials. Vowing revenge on Rama-Tut, En Sabah Nur enters the Pharaoh's city posing as a slave and draws the romantic attention of Ozymandias's sister, Nephri. On seeing the mutant's true appearance, Nephri rejects him and turns to her brother for protection. Heartbroken by this final rejection, En Sabah Nur's rage causes his mutant abilities to fully emerge. Rampaging, he renames himself Apocalypse. Rama-Tut flees and En Sabah Nur uses the Celestial technology to transform his former tormentor Ozymandias into a blind clairvoyant made of living stone, now enslaved to Apocalypse. As the years go on, Apocalypse finds he no longer ages.
It is revealed in the series S.H.I.E.L.D. that Apocalypse at some point in the days of Ancient Egypt joins forces with the Brotherhood of the Shield to successfully fend off a Brood invasion. Also present are Imhotep and a man who is either the moon god called Khonshu or his first Moon Knight avatar/champion."
Days of Future Past's post-credit scene gave us a glimpse of what IGN lists as the #24 all time Supervillain.
Once again I will defer to Wiki for a brief description of his powerset:
"Apocalypse is an ancient mutant born with a variety of superhuman abilities who further augmented himself after merging with Celestial technology. The character has total control over the molecules of his body, enabling him to alter his form as it suits him, such as allowing his body to become extremely malleable and flexible or change its size, enhance his physical abilities, transform his limbs into weapons, wings, or jets, regenerate from fatal injuries, adapt his body to apparently any disease or hostile environment, and give himself virtually any physical superhuman power. The character is also able to project and absorb energy, and has displayed telepathy and telekinesis. Apocalypse is as well capable of technopathy, able to directly interface with the various technologies he has at his disposal. Thanks to the aid of his mutant abilities, special "regeneration" chambers, and changing bodies, Apocalypse has made himself effectively immortal.
Aside from his superhuman powers, Apocalypse is extraordinarily intelligent, a scientific genius with knowledge in various areas of science and technology including physics, engineering, genetics and biology, that is far more advanced than conventional science. Apocalypse has knowledge of Celestial technology that he uses for his own applications, such as altering mutants or humans. Apocalypse is also a skilled demagogue and a master strategist.
Apocalypse's blood can heal other mutants, but is fatal for humans. Apocalypse's blood can also restore his de-powered mutant descendants as is seen when a large dose of Apocalypse's blood regenerates the lost body part of Chamber and gave him a look similar to Apocalypse"
Also mentioned in the interview is the recent news that Brit BEN HARDY, famously known for his role as Peter Beale in the BBC soap opera EastEnders, will be playing Archangel is X-Men: Apocalypse. There are still plenty of questions on how this version of Archangel relates to ANGEL/ WARREN WORTHINGTON played by Ben Foster in X3.
Here is the concept art for BEN HARDY/ ARCHANGEL as mentioned in the video as posted by Slash Film.
X-Men: Apocalypse will be opening May 27, 2016. Written by by Simon Kinberg, Dan Harris, and Michael Dougherty. Directed by Bryan Singer and starring James McAvoy, Jennifer Lawrence, Michael Fassbender, Nicholas Hoult, Evan Peters, Rose Byrne, Sophie Turner, Tye Sheridan, Alexandra Shipp, Channing Tatum, Olivia Munn and Kodi Smit-McPhee.