—In-game description from Fire Emblem Echoes: Shadows of Valentia.
The Fiend (魔人 Majin, lit. Devil or Demon Man) is an enemy-only Monster class that first appeared in Fire Emblem Gaiden, and reappears in it's remake. It is an enemy-only monster version of the Baron class and in Gaiden shared the same stats with the Baron Class. In Echoes, they have different stats and are now marked as Terrors.