Oh, gee. Okay, it's technically not Bendy himself that's corrupting these people, because this would be categorized under Corruption, but the ink itself. Many of the characters within the game have been affected by the ink, including the antagonists like Sammy Lawrence from Chapter Two, Alice Angel and the Projectionist from Chapter Three, or Bendy himself. It's highly likely that the ink monsters, especially Sammy, Alice, the Projectionist and Bendy, and possibly Boris as well, were the people who previously worked at the studio, and were corrupted by the ink from the Ink Machine.
My point is that when you're damaged in the game by any of the ink monsters, ink starts to blot your vision until you take too much damage and die. Bendy also accomplishes this goal in one fell swoop. So, judging from what happens when you're damaged and the liquid sound effects that occur shortly after the screen, that he consumes you in the liquid. (And if the fate of Sammy Lawrence from Chapter Two is any indication, he is likely the most fearsome ink monster in the game, more so than even Alice.)
Anyway, Chapter Four of BATIM is literally right around the corner, so we all might wanna keep an eye on that for the possibility of going deeper into this.