10 Horror Movie Villains You Didn't Know Were Based On Real-Life Monsters

10. Primeval's Gustave

In Burundi, a British forensic anthropologist examines a mass grave and comes to the conclusion all were killed in an identical - and in an unfathomable manner just as an unseen creature drags her into the river. Back in NYC, journalist Tim Manfrey is sent to Africa to investigate Gustave, a gigantic crocodile responsible for killing hundreds of people. Risking life and limb, Tim and his small news crew brave the croc and a warlord, unsubtly named “Little Gustave.” A few human meals later, the heroes face down both Gustaves in the crocodile’s lair.

With enough film credits to make a B list actor jealous, Gustave the giant crocodile has inspired - and even starred in - a number of shows and movies, including the film Primeval, which was originally titled “Gustave."

Over 60 years old and more than 6 meters long, the large Nile crocodile in truly at the top of the food chain. Why? He is a notorious man-eater and it’s speculated he’s killed hundreds of people along the banks of the Ruzizi River. As in he. Eats. People. Local folklore claims more than 300 people have fallen prey to the 910 kg serial killer.