User blog comment:Umbra-warlock/Theories of Bayonetta 2/@comment-24540535-20140520071840

Its possible Rodin will be a boss but as of yet I haven't really seen anything for it. Kamiya wished to possibly see a Bayonetta 3 if Bayo 2 went well. If be beat Rodin then Bayonetta wouldn't have her weapons. Also, Rodin merely makes weapons, not just for her. He's made  weapons for Angels and others.

Moving on. Why would he train a Sage? What purpose would that be? I'm sure they'd know he was Demonic. Unless he stole one but I, honestly, can't see that happening. He would have gone after Bayonetta then since she's one of the Eyes of the World. If he knew more about Lumen Sages he may have made a remark about it at some point while Bayo was searching.

Overseer, from the way it sounds, looks over the Human Realm (Chaos) as its Creator. Sheba is the Darkworld counterpart and Juby is the Lightworld counterpart. The dimensions are not split into 2 forces, but 3. Light, Dark and Chaos in between. If anything Rodin should have simply taken over Juby's place now that her soul is frying, I'm sure he could defeat any angel in his way so why not just kicked them around until he's top dog again.