Ten years before Society, John Carpenter envisioned a parasitic extraterrestrial lifeform that assimilates other organisms in order to ultimately imitate them.
The incredibly realistic (and disgusting) transformations were brilliantly depicted using practical effects, which many fans prefer over the CGI of the 2011 prequel.
The Manster (1962)
A mad scientist working on evolution caused by cosmic rays in the atmosphere stimulates chemical change in a foreign news correspondent. After a few days, the man discovers a large eyeball growing out of his shoulder.
Eventually, the eyeball grows to an entire head, then later he splits into two completely separate entities.
There are so many bizarre monsters to choose from it’s hard to narrow it down to just 12. So tell us in the comment section some of your favorites we left off our list.