Com base neste artigo , o filme Split foi inspirado na história da vida real de Billy Milligan . Ele supostamente tinha 24 personalidades como parte do DID, e assim as 24 personalidades ficaram ...
It has intrigued him (Night.M.Shyamalan) since the 1990s, when he heard that Titanic director James Cameron was trying to make a movie about Billy Milligan, the first man to successfully use the disorder as a legal defence.
"I've loved the subject for a long time. I remember I heard that James Cameron was going to make a movie about DID, based on the book The Minds Of Billy Milligan. And I was, like, 'Oh my god, that's going to be amazing. I want to grow up and make that movie.'"
Semelhante ao Professor sendo o 24º que uniu todas as personalidades para Milligan, o Beast foi a 24ª personalidade de Kevin.