Whiplash

The whiplash is a new monster occurring in Doom Eternal. It is a vaguely humanoid demon which has been reduced to its head, arms, and upper torso and attached to a cybernetic serpentine tail. It has multiple means of attack: it carries a flaming chain which it can use as a whip, it has a sharp appendage on the end of its tail, and it also has two lethal, claw-like blades which are either attached to or sometimes carried in its hands. The demon has red glowing eyes, two backward-curving goat-like horns, and has an exposed brain.

Tactical analysis
The whiplash attacks from range with its whips and is able to slither quickly along the ground.