Doppelganger

Scholars have debated for centuries about the origin of the doppelgangers. Shadowy, mysterious, and enigmatic, these shapeshifters learned long ago how to integrate themselves into human society. For this reason, learned men and women believe that doppelgangers were once human. How doppelgangers gained their unique abilities is unknown, even to themselves. Doppelgangers do not have a society of their own. They fill any desire for companionship and social interaction through their association with other races. Although doppelgangers act independently, following their own motivations and goals, rumors persist of a "secret cabal" of elder doppelgangers who desire nothing less than control of the world. Little evidence corroborates these rumors, which may have been perpetuated by the doppelgangers themselves to lend evenmore mystery to their race's reputation.

Doppelganger Racial Traits:
+2 Strength, +2 Dexterity, +2 Constitution, +2 Intelligence, +4 Wisdom, +2 Charisma: Doppelgangers have improved their minds and bodies through centuries of mimicking humanoid forms.
Monstrous Humanoid (Shapechanger): Doppelgangers are monstrous humanoids with the shapechanger subtype. They retain this type and subtype regardless of any humanoid form they may assume.
Medium: As Medium creatures, doppelgangers have no special bonuses or penalties due to size.
Doppelganger base land speed is 30 feet.
Darkvision: Doppelgangers can see in the dark out to 60 feet.
Racial Hit Dice: A doppelganger begins with four levels of monstrous humanoid.
+4 natural armor bonus: Doppelganger skin is resilient and tough.
Racial Skills: +10 to Bluff, +8 Sense Motive, +2 Intimidate, +2 Persuade. Doppelgangers have a talent for deception.
Change Shape (Su): A doppelganger can assume the shape of any Small or Medium humanoid.
Immunities: A doppelganger is immune to sleep and charm effects.
Favored Class: Rogue. A multiclass doppelganger's rogue class does not count when determining whether it takes an experience point penalty for multiclassing.
Level adjustment: +4

Racial Feats
Darkvision
Shapeshifter
Change Shape
Natural Armor 4