Doppelganger

This grayish humanoid creature seems almost unfinished, with a narrow head, gaunt limbs, and a sinister, noseless face.

Doppelganger CR 3

XP 800
N Medium monstrous humanoid (shapechanger)
Init +1; Senses darkvision 60 ft.; Perception +9

 DEFENSE

AC 16, touch 12, flat-footed 14 (+1 Dex, +1 dodge, +4 natural)
hp 26 (4d10+4)
Fort +4, Ref +5, Will +6
Immune charm, sleep

 OFFENSE

Speed 30 ft.
Melee 2 claws +8 (1d8+4)
Spell-Like Abilities (CL 18th)
At will—
detect thoughts (DC 13)

 STATISTICS

Str 18, Dex 13, Con 12, Int 13, Wis 14, Cha 13
Base Atk +4; CMB +8; CMD 20
Feats Dodge, Great Fortitude
Skills Bluff +9 (+13 while using change shape ability), Diplomacy +4, Disguise +9 (+29 while using change shape ability), Perception +9, Sense Motive +6, Stealth +5; Racial Modifiers +4 Bluff, +4 Disguise
Languages Common
SQ change shape (alter self), perfect copy, mimicry

 SPECIAL ABILITIES

Mimicry (Ex)

A doppelganger is proficient in all weapons, armor, and shields. In addition, a doppelganger can use any spell trigger or spell completion item as if the spells were on its spell list. Its caster level is equal to its racial Hit Dice.

Perfect Copy (Su)

When a doppelganger uses change shape, it can assume the appearance of specific individuals.