Apothicon

The Apothicons are a malevolent race of inter-dimensional beings that were birthed at the beginning of time. Initially part of the race of benevolent Keepers, the Apothicons split off into a corrupted version of their former kind.

Biology
Due to their nature, there are various different subspecies of Apothicons, with their features, sizes, and structures varying from one another, however there seems to be a consistency regarding their sharp teeth and various tentacle-like appendages with most Apothicons.

Culture and Society
The Apothicons do not have a true "society", with all of their effort being spent into both consuming other dimensions and returning to their former home of Agartha. The Apothicons are linked together through a collective hivemind, sharing the same thoughts and experiences. However, some, like the Shadowman, appear to be able to feign independence and retain their own personalities and experiences despite still being part of the overall Apothicon hivemind. However, it is implied that they worship the various "Elder Gods" of the Apothicons, due to their title, and thus can be stated to have a form of religious system.

History
At the beginning of time, there were only the Keepers, who were the creators and caretakers of creation. However, a group of Keepers led by the individual who would soon become known as "The Shadowman" ventured into a dimension of pure corruption and evil known as the Dark Aether. They soon discovered an element known as Divinium that corrupted their minds and spirits. They soon declared war against that uncorrupted kin, beginning the War of Agartha, which the Keepers eventually won. The Apothicons were banished to the Dark Aether that had corrupted them, where they transformed even further into monstrous abominations.

Games

 * Call of Duty: Black Ops (alluded to)
 * Call of Duty: Black Ops III
 * Call of Duty: Black Ops 4

Comics

 * Call of Duty: Zombies (Dark Horse)