Sources
CR
Type
Size
Alignment
Movement

Helmed Horror

Medium Construct, Unaligned

Armor Class 20 (plate armor, shield)
Hit Points 60 (8d8 + 24)
Speed 30 ft., fly 30 ft.
STR
18
+4
DEX
13
+1
CON
16
+3
INT
10
+0
WIS
10
+0
CHA
10
+0
Skills Perception +4
Damage Resistances bludgeoning, piercing, slashing, from nonmagical attacks that aren't adamantine
Damage Immunities force, necrotic, poison
Condition Immunities Blinded, Charmed, Deafened, Frightened, Paralyzed, Petrified, Poisoned, Stunned
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 14
Languages understands the languages of its creator but can't speak
Challenge 4 (1,100 XP)

Traits

Magic Resistance. The helmed horror has advantage on saving throws against spells and other magical effects.

Spell Immunity. The helmed horror is immune to three spells chosen by its creator. Typical immunities include fireball, heat metal, and lightning bolt.

Actions

Multiattack. The helmed horror makes two longsword attacks.

Longsword. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit:8 (1d8 + 4) slashing damage, or 9 (1d10 + 4) slashing damage if used with two hands.

Lore

This construct possesses intelligence, the ability to reason and adjust its tactics, and an unswerving devotion to its maker that persists even after its maker's demise. Resembling an animated suit of empty plate armor, a helmed horror serves without ambition or emotion.