Doppelganger
medium monstrosity, neutral
AC 14 (natural armor)
Initiative +4 (14)
HP 52 (8d8 + 16)
Speed 30 ft.
Skills Deception +6, Insight +3
Senses Darkvision 60 ft. Passive Perception 11
Languages common plus three other languages
CR 3 (XP 700; PB +2)
Actions
Multiattack. The doppelganger makes two Slam attacks and uses Unsettling Visage if available.
Read Thoughts. The doppelganger casts Detect Thoughts, requiring no spell components and using Charisma as the spellcasting ability (spell save DC 12). - At Will: Detect Thoughts
Slam. Melee Attack Roll: +6 (with Advantage during the first round of each combat), reach 5 ft. 11 (2d6 + 4) Bludgeoning damage.
Unsettling Visage (Recharge 6). Wisdom Saving Throw: DC 12, each creature in a 15-foot Emanation originating from the doppelganger that can see the doppelganger. Failure: The target has the Frightened condition and repeats the save at the end of each of its turns, ending the effect on itself on a success. After 1 minute, it succeeds automatically.
Doppelganger is from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, used under the Creative Commons Attribution 4.0 International License. Full attribution is on the Licenses & Attribution page.