Abaddon's protégé

This unnamed demon was a protégé of the Knight of Hell Abaddon.

Powers and Abilities
This demon appeared to be a regular low-level demon with the powers of ones.
 * Demonic Possession - As a demon, he needed a vessel to walk the Earth.
 * Immortality - As a demon, he would never age or die unless killed.
 * Invulnerability - As a demon, he was invulnerable to normal methods of harm.

Weaknesses
As a regular low-level demon, he possessed all the weaknesses of ones.
 * Demon-Killing Knife - Dean Winchester was able to kill two with the demon-killing knife.
 * Angel Blades - Crowley was able to kill one with an angel blade.
 * High-Tier Demons - As regular low-level demons, they were no match for higher level demons. One proved to be no match for Crowley while the rest were easily slaughtered by Cain.

Appearances

 * Season 8
 * As Time Goes By (mentioned only)
 * Season 9
 * First Born (mentioned only)