Helmed Demon (5e Creature)
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Medium aberration, chaotic evil
Saving Throws Dex +6, Con +5
Force Tendrils. The helmed demon has four invisible, invincible tendrils made from force that stem from the top of the creatures spine. It uses the tendrils to move about quickly. The helmed demon ignores difficult terrain and is able to cross pits of up to 10 feet wide as if they were regular terrain. The helmed demon cannot end its movement over a pit. The helmed demon does not expend any movement when standing from prone.
Multiattack. The helmed demon makes up to four Force Tendril or Tendril Grapple attacks. It can make one less attack for each creature it has grappled.
Force Tendril. Melee Weapon Attack: +6 to hit, reach 15 ft., one target. Hit: 5 (1d4 + 3) piercing damage and 2 (1d4) force damage. This is a magic weapon attack.
Tendril Grapple. Melee Weapon Attack: +6 to hit, reach 15 ft., one target. Hit: 2 (1d4) force damage. A Medium or smaller creature hit by the Tendril Grapple is grappled (escape DC 16). Until the grapple ends, the target is restrained. The helmed demon has four tendrils, each of which can grapple only one target.
Plane Shift (2/Day). The helmed demon casts the plane shift spell targeting itself or any one of the creatures it has grappled. The grappled target must succeed on a DC 14 Charisma saving throw. It can only shift between the Material Plane and the Abyss.
Tendril Shield. When the helmed demon is hit by an attack or takes damage from the magic missile spell, it gains a +5 bonus to its AC until the end of its next turn and takes no damage from magic missile. If the helmed demon uses its Tendril Shield while it has creatures grappled, those creatures are immediately released.
Helmed demons are mysterious, humanoid creatures that often appear on the outskirts of towns and cities or within large, old cemeteries. They will pretend to be mourners or lost travellers who have had the strange helmet they wear forcefully stuck on their head. After luring in vulnerable individuals, they will attempt to slay any males and kidnap females. Quick to sweep up females into the grasps of their invisible tendrils, they will then warp the females into the deep Abyss where those women will be forced to undergo the same horrific ritual they endured.
The helmed demons source of strength is its powerful force tendrils. Seemingly manifested from the trauma caused by the cage helmet, the helmet generates the magic to form the tentacles from the pain of the wearer. It is unknown what the head looks like beneath the helmet and it is seemingly impossible to find out, as the helmet cannot be removed.