you find a gray blob in a remote cave inside a Forrest, it slowly changes its shape to look exactly like you
Doppel
Doppel is a being that transforms into you and tries to be exactly like you. like a clone.
image credit:
https://commons.wikimedia.org/w/index.php?search=mirror&title=Special:MediaSearch&go=Go&type=image (https://creativecommons.org/licenses/by-sa/4.0/deed.en)
