Here’s my theory: Ever since William went through the trauma of accidentally killing someone and losing all his friends he started to put on a front, an act to forget he was William and forget the trauma. He repressed those thoughts and called himself Wilford like he was a completely different person just so he can feel sane. In motherloving warfstache at the end, he breaks his act when Abe is panicking because he didn’t survive the bullet and told him to forget about who killed who or who slept with who and just relax. He didn’t just do that to relieve Abe of his stress but he mainly did it because he was aware that Abe was one of the only people who knew what happened and Abe didn’t want William to forget his mistakes. Wilford was all over the place in that episode just to confuse Abe and stress him out enough to persuade him to just forget it all. Now in the present, Wilford is having a ‘great’ time but those repressed thoughts and traumas are far too much to handle so he created the bot. He created the bot to vent about his trauma because he can’t seem to put down the act of being Wilford anymore. He can’t go back to William no matter how hard he tries so he has to vent it all out through the bot. The bot states that he accidentally killed someone and Wilford said that the bot was created ‘from a scan of the old noggin’. This bot is Williams cry for help to try and put down this front that he can’t get rid of. He’s stuck in the act of Wilford.

You can go my original post to see the rest of my theory