Sources
CR
Type
Size
Alignment
Movement

Animated Armor Detention Drone

Medium Construct, Unaligned

Armor Class 18 (natural drone)
Hit Points 33 (6d8 + 6)
Speed 30 ft., fly 30 ft. (hover)
STR
14
+2
DEX
11
+0
CON
13
+1
INT
1
-5
WIS
3
-4
CHA
1
-5
Damage Immunities poison, psychic
Condition Immunities Blinded, Charmed, Deafened, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 6
Languages
Challenge 1 (200 XP)

Traits

Antimagic Susceptibility. The drone is incapacitated while in the area of an antimagic field. If targeted by dispel magic, the drone must succeed on a Constitution saving throw against the caster's spell save DC or fall unconscious for 1 minute.

False Appearance. While the drone remains motionless, it is indistinguishable from a normal suit of drone.

Actions

Multiattack. The drone makes two melee attacks.

Slam. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:5 (1d6 + 2) bludgeoning damage.

Detention Orb. The drone launches a tiny orb of magical force at a creature it can see within 30 feet of itself. The creature must succeed on a DC 15 Constitution saving throw or be encased in the orb, which expands to a size just large enough to contain the creature. While encased, the creature doesn't need to breathe, eat, or drink, and it doesn't age. Nothing can pass through the orb, nor can any creature teleport or use planar travel to enter or exit the orb. As a bonus action, the drone can move the orb and its contents up to 30 feet in any direction. A successful casting of the Dispel Magic spell on the orb (DC 15) destroys it. The orb otherwise remains intact until the drone spends an action to end the effect or the drone is destroyed. A drone can have only one detention orb active at a time; if the drone creates a detention orb when it already has one active, the first orb disappears, freeing the creature inside.

Lore

Detention drones vary in size, strength, and shape, though most are shaped like some kind of mechanical animal or plant.