With disturbing body horror, goofy humor, and a walrus man, it seems strange that there’s even a discussion about whether Tusk is based on a true story. Indeed, Kevin Smiths horror comedy claims to be inspired by real events, and that is technically true. The actual story of Tusk isn’t as bombastic and harrowing as the movie nobody was ever turned into a walrus in real life. However, as Tusk proudly points out, the skin-crawling premise of a human being surgically reconstructed into a hybrid man-walrus creature for the enjoyment of an eccentric serial killer isn’t entirely fictional.

https://screenrant.com/tusk-movie-walrus-man-true-story/