Moon Goons (for 5e and Old School Simulacra)

Moon Goons get their name from their heads or masks, large, round, and faintly luminous like the Moon, and their vile behavior. The Moon Goons avoid the real moon, only striking when it is new. Their spindly, bone-white limbs are animated with odd gestures and faintly aglow despite the lack of moonlight. They are forever mumbling and conversing, but their lips never move and their speech is unintelligible.

They arrive in balloons--or what look like balloons--but their gondolas are slung from metal spheres with the appearance of lead. The spheres are hollow, and no one knows from where they derive their buoyancy nor what propels them forward. Perhaps the Moon Goons know, but they don't say. Each gondola carries 2-3 moon goons. They arrive in groups of 2-4 balloons.

They prey on small, isolated villages or farms. The items that interest them are often not particularly valuable at all--at least not in the strict monetary sense. Sentimental value seems the be the primary quality evident in the things they steal.

Moon goons try to put the humans they rob to sleep with the silvery metallic rods they carry. The slumber the rods produce sleep that is plagued by weird nightmares. Humans that prove resistant to their rods or harm one of the moon goons raiders, may find themselves on sharp end of their scalpel-like knives.

Old School Stats:

#Enc: 1-3 x 4  AC: 3 HD: 4 Attacks: 1 (sleep on failed saving throw, or 1d6).

5e stats:

MOON GOON
medium aberration, neutral evil
AC 15 (natural armor)
Hit Points: 22 (4d8+4)
Speed: 30 ft.
STR 11(+0) DEX 13(+1) CON 12(+1) INT 13(+1) WIS 12(+1) CHA10(+0)
Skills: Stealth +6
Senses Darkvision 60 ft., passive Perception 11.
Languages Understands any language but don't speak any of them

Magic Resistance. A Moon Goon has an advantage against spells and other magical effect.

Actions:
Rod. Ranged Weapon Attack: +4 to hit, one target in a 30 foot range. Hit: On a failed DC 12 Constitution save, the target falls to sleep.
Scalpel-like Knife. Melee Weapon Attack. +4 to hit, 5 ft. reach, one target, Hit: 1d8.