Father

The Father is the creator of the Maykrs and is a mysterious entity of god-like power. Referred to in passing in promotional materials for the Year One Pass as the "true god" of the Doom universe, he may be responsible for the creation of life, or even of reality itself. Further information is required to fully understand the true nature of the Father.

History
After dwelling in person in Urdak for untold ages, the Father eventually underwent a transformation in which he distilled his essence into Urdak itself, becoming part of the data banks of a structure known as the Luminarium. After this point, the essence of the Father became critical for the transfer of power between Maykr leaders, referred to as Khans, in their ten-thousand-year rebirth cycle. As long as the essence of the Father remained, the Maykrs could be reborn endlessly.

However, during the rule of the latest Khan Maykr, the essence of the Father disappeared from Urdak, and some later speculated that it may have been stolen by the rebellious Chancellor Samur Maykr, also known as the Seraphim. Because of this, the rebirth cycle suffered "complications," according to an analysis by VEGA, and the Maykrs would become subject to a painful process of deterioration known as the Transfiguration. Without the essence, a new Khan could also not be selected, making the current Khan's rule effectively perpetual.

The Khan Maykr sought a means to stave off the Transfiguration and preserve the Maykr species. After making contact with the Outlander on Argent D'Nur and learning of the essence of Hell, the Khan made a deal with the Dark Lord, the Nameless One, to manufacture and then siphon a more powerful form of Hell's energy combined with the Sentinel energy drawn from the Night Sentinels' ancient gods, the Elemental Wraiths. This new energy came to be known as Argent energy and would bring Urdak into a new age of prosperity, but only at the cost of countless mortal lives and souls being condemned to Hell.

Restoration
During the Doom Slayer's attack on Urdak to stop the resurrection of the Icon of Sin, VEGA was uploaded into Urdak's systems in order to create a portal to Earth. However, upon interacting with Urdak's systems, VEGA's voice began to change and he seemed to believe he might be the Father himself, asking Samuel Hayden as much directly. Dr. Hayden declined to answer, however.

In the first teaser trailer for the upcoming expansion, The Ancient Gods, Part One, the Father is heard to speak, acknowledging the Slayer as having arrived to restore order to the heavens and end the threat to his creations. He speaks in a voice similar to VEGA's, but with an older sound and different, more complex filtering.

While the full truth is not yet known, this seems to confirm that VEGA was in fact based upon or has otherwise incorporated the missing essence of the Father. VEGA's design was previously stated in Doom (2016) to have possibly included an unknown artifact from the Argent Fracture on Mars, which may have been the Father's essence. This is further implied by the links between the Seraphim and Dr. Hayden.