As this crisis led to the creation of a destructive artificial Celestial called the Progenitor, members of the Quiet Council fought alongside the Eternals and Avengers.

Source: https://insidepulse.com/2023/03/01/marvel-comics-demythifies-quiet-council-for-sins-of-sinister-x-men-event/

In order to end the conflict, rogue Eternals worked with the Avengers and Mister Sinister to create a new Celestial god for the Eternals, the Progenitor.

Source: https://www.cbr.com/xmen-greatest-victories-marvel-comics-2018-2023/

Together they would discover the origins of the Progenitor virus and uncover Spencer's creation of Umbrella Pharmaceuticals as a tool to achieve immortality.

Source: https://gamerant.com/resident-evil-4-remake-pre-development-stage-3-5-devil-may-cry-haunting-ground-ganados/