Here you will find all the characters that have used the alias Apocalypse.

Prime Universe

En Sabah Nur
The first and Main
Scott Summer
Was fused with Apocalypse
Warren Worthington Became Apocalypse after En Sabah Nur’s death

Possible Figures: Evan Sabahnur

Alternate Universe

Jean Grey (Age of Apocalypse) Became Apocalypse following the death of Weapon Omega