Demons are standard monsters in the Realms of Gauntlet. Like other foes, they crawl out of Generators. Unlike other advanced grunts, however, Demons have a ranged fireball attack, with the same properties of a hero's ranged weapon (diagonal shot possible, only one projectile at a time), but this fireball can also destroy fellow monsters! Clever heroes can use this to their advantage, by maneuvering so that monsters fall into a crossfire. They will eagerly engage in melee.
In Quest Mode, the demon's fireball causes slight knockback.
Demons only gain the ranged attack at the upper levels of Demon. They are typically encountered as the advanced grunt in the Mountain Kingdom, and are found in the Lost Cave and Volcanic Cavern. They are also a major resident of the Desecrated Temple of Skorne's Temple, and encountered for the last time at the Gates of the Underworld from Skorne's world.