In which "Call of Duty" game are the "Apothicons" introduced in the Zombies mode?

The Apothicons are introduced in the zombies mode of Call of Duty: Black Ops III. This game takes players on a wild journey through a twisted storyline involving different dimensions and supernatural creatures, with the Apothicons being one of the central aspects of the plot. They are ancient, primordial beings corrupted by the dark Aether, and Black Ops III dives deep into this mythos, making it the game where players first encounter and battle against these powerful entities in the zombies mode.