The leech-like puppeteer is a psionic parasite. It is driven to find and control a host, functionally piloting it.
Parasite. The puppeteer feeds on its host’s blood. It will latch onto a nondescript location of its host, and hide itself among clothing or hair.
Enthraller. When it discovers a lone creature, typically a humanoid, the puppeteer will attempt to charm the target. If successful, the puppeteer will ask its charmed target to pick it up so the puppeteer can latch onto the host and assert total dominance.
Plague of Dominance. Puppeteers are known to work together and usurp control over a number of hosts in a society to gain control. This provides them apply bodies to use as host, and can spread their influence over greater areas.
Tiny monstrosity, lawful evil
Armor Class 12
Hit Points 30 (12d4)
Speed 5 ft.
Skills Stealth +6
Senses blindsight 60 ft., passive Perception 13
Languages telepathy 20 ft.
Challenge 1/2 (100 XP) Proficiency Bonus +2
Hide Mind. The puppeteer can’t be detected by clairsentient powers or divination spells.
Host Protection. While in control of a host, the puppeteer is unaffected by spells, powers, and effects that don’t target only the puppeteer, and half of all damage it takes is transferred to its host. Attack rolls to hit the puppeteer have disadvantage, and if they have disadvantage from another source, they automatically miss.
Power Manifesting. The puppeteer is a 1st-level manifester. Its manifesting ability is Charisma (power save DC 13, +5 to hit with power attacks). It has 6 power points to spend on the following powers: extrasensory perception, mental barrier, psychic domination.
Enthrall. When the puppeteer is in contact with a creature it charms, it dominates the creature, causing it to act as if under the dominate monster spell, except that it is a psionic effect. The domination remains until the puppeteer is removed or killed. Removing the puppeteer requires a successful attack against its host followed by a successful DC 15 Strength check. The host takes 15 (6d4) necrotic damage if the puppeteer is removed without first killing the puppeteer.