I just watched Bendy's episode last night on Comcast (on demand is SUCH a great feature

) but I was watching Bendy and I couldn't help but wonder who would create such an imaginary friend like him.
I don't think Gregory (the kid who had him originally) is the creator, something tells me Bendy has done this before he ever met that family. I also got to wonder WHY Bendy does this, because he really seems to have no point.
Wally did pranks for laughs, Lincoln was power hungry, and Berry went nuts because of her obsession for Bloo. But no matter how many times I watch Bendy act like a prick, I can't for the life of me figure out why he's doing this.
Even mean or rude people have somewhat of a reason for doing this, and I can't see why Bendy does this. It's obviously a flawed lifestyle, he keeps getting kicked out of houses for it, this is really boggling me.