Demonic trooper

The demonic trooper is an ambient monster introduced in The Ancient Gods, Part Two. They are found in the city of Immora and serve to protect it and the Dark Lord.

Tactical analysis
Demonic troopers are usually encountered in groups, but can be killed with any gun. Because they are classed as ambient demons, demonic troopers cannot be chainsawed or glory killed.

Lore
Demonic troopers are members of Immora's warrior caste, and have watched over its walls for millenia. The imperial guard of Davoth is considered an honored position among the city's citizens.

Trivia

 * The demonic troopers wear Catalyst armor and use Reaper guns, both seen in Doom (2016)'s multiplayer mode.
 * It has been implied that the demonic troopers are themselves zombies, given that they make the same sounds as Soldiers.