- Not to be confused with Burning Fiend (Forge of Aeons), Burning Fiend (Azsuna), or Burning Fiend (Talador).
Burning Fiend are vilefiends located in the Annihilan Pits in Krokuun. They can also be summoned by Aggonar during  A Strike at the Heart. They are also in Antoran Wastes.
- Rotting Bite - Bites the target inflicting Nature damage and additional Nature damage every 2 sec. for 6 sec.
- Burning Flames - Engulfs the caster in an aura of flame, inflicting Fire damage to nearby enemies every 3 sec.
- Double Swipe - Swipes in front of the caster, inflicting Fire damage twice in a cone.
- Vile Rupture - The caster erupts upon death, leaving a pool of vile acid at their position, inflicting Nature damage every 1 sec to enemies standing in it.