Angel of decay

An angel of decay (or rot harbinger) was an undead monstrosity that was the very essence of decay.

Description
Standing 9 feet tall and weighing 500–700 lbs with wings and claws, their putrid bodies constantly decomposed, and pools of filth dribbled around their feet.

When they spoke they did so with a slurred, muddy voice.

Abilities
When a creature died, decayed, and finally liquefied, it released a gaseous essence that an angel of decay could draw strength from.

History
The angels of decay were created as a mockery of, and possibly from, the legion of true angels sent against the demon lord Orcus at a time when he traveled the layers of the Abyss. Many of the creatures who escaped his service kept alive their lust for misery.

Combat
In battle, they were ferocious, using their ogre-like size and strength to pummel opponents who had not already succumbed to their aura of corruption.

Notable Angels of Decay
An angel of decay named Shex was a field commander for an army of undead.