My theory on why Bendy chases Henry and is overall evil.

I personally think that Joey or Sammy made the pentagrams you can find in chapter one (the one at the end) and chapter two (just go find them) and killed people, explaining the coffins, which allowed bendy to take form (presumably Joey as he supposedly created bendy, so he might show the most care towards bendy) and the searchers to take form (other workers). Now, Boris is where things get really difficult, so I will leave him out of this for now, since he was dead in the first chapter. So yeah. That was my theory thank you for reading!