Four Horsemen of Apocalypse Vs. The X-Men

They are almost complete, according to the first trailer of X-Men: Apocalypse

Introducing the mutants during the Apocalypse era:

Warren Worthington III aka Angel

Erik Lehnsherr aka Magneto

 En Sabah Nur aka Apocalypse, the first mutant

The Three Horsemen with Apocalypse

Jean Grey,  Scott Summers aka Cyclops & Kurt Wagner aka Nightcrawler

shape-shifted Apocalypse holding down Quicksilver

menacing Ororo Munroe aka Storm

 Moira MacTaggert, Jean Grey, Raven Darkhölme aka Mystique, Peter Maximoff aka Quicksilver & Hank McCoy aka Beast.

the 4th Horseman, Professor X