However, when the X-Men are unable to defeat Apocalypse – a mutant with limitless power and a near-invulnerable body – only Jean Grey (and the unchecked power of the Phoenix) can destroy the villain.
In the final battle of X-Men: Apocalypse, the X-Men arrive in Cairo to rescue Charles Xavier from En Sabah Nur (aka Apocalypse) – who is using Xavier as a means to communicate with (and coerce) mutants around the world.
A coordinated attack on Apocalypse doesn’t finish him off – until Xavier calls out to Jean Grey to unleash the full power of her mutant abilities.
NOTE: The Following Post Contains MAJOR SPOILERS for X-Men: Apocalypse.