Alien (Mammoth 2006)

This Alien Lifeform is an unspecified, slime-like organism that crash-landed on Earth.

Description
The exact alien lifeform appears to be a slime-like organism, silver in coloration. Very little is known about its origin or sapience, but it has been observed to be capable of possessing physical bodies, regardless of age or decomposition, as a possible means to adapt to the world it would be on.

While having many of the main abilities of the creature it's host of, the alien lifeform can seemingly drain lifeforce out of other organisms as a means of sustenance or energy source.