Doppelganger : When first spawned in, it will be a flawed form with wrong limbs and or colors but over time it will slowly become a perfect copy of a player which could be in the time of 5-10 minutes

Alternate (Abomination) : Will always be flawed and will stalk the player and say things when near or stop saying things and chase the player when not being looked at.
Could also have a chance to try to mimic a player but still with a flawed form
(They Also like to linger in dark areas)

Intruder : Requires to be in a dark place to spawn

Will Stalk the Player for extended periods of time similar to Abomination but will take the player to a part of the map to kill them or bring them to an Abomniation Near by to turn them into a Doppelganger

Can teleport when player is not observing