The Thing (Organism) from a cancelled concept art from the cancelled videgame for playstation 2 :

The Thing 2 (2005)

The Thing (true name unknown)

Version ; Sonic Beast

Anatomy: Assimilates and replicates its victims,Capable of radically altering form,Every part is a potentially autonomous creature.assimilated:Various victimsThis thing doesn't want to show itself; it wants to hide inside an imitation. It'll fight if it has to, but it's vulnerable out in the open. If it takes us over, then it has no more enemies. Nobody left to kill it. And then it's won.― R.J. MacReady.[src]The Thing is an extremely hostile shape-shifting extraterrestrial organism and the primary antagonist of the 1982 science-fiction film The Thing, its prequel, video-games and literature. The Thing has the ability to assimilate other life forms in order to survive and spread. The original physical characteristics of The Thing and its motivations are unknown as it could have assimilated hundreds if not thousands of other species before it crashed on Earth.

More informations inside the wiki ; https://thething.fandom.com/wiki/The_Thing_(Organism)