I don't think I really have an origin thought out for Bob.
Personally, I like to joke that Bob doesn't have a past, and literally sprang into existence as an adult the moment I imagined him.
Fits in with all his fourth wall breaking madness.
But he does have a younger brother, so I suppose he needs some kind of family and childhood. I'll try to think of one for him.
Oh, unrelated, but:
The main reason I haven't continued my story is I haven't had access to the computer where I have the partially started version of the next episode saved.
Whatever it is, I hope it's good. Someone like Bob should have the most expansive backstory out of everyone.
Loved it, Blue.
It did have a deeper connection to the story than your previous backstory, I'll add.
But of course! That's why I did it. ...Well, that and the Uchiha vibe it had going...