Board Thread:Theories and Speculation/@comment-27725840-20170731214952/@comment-734582-20171028140227

Joelnachohero789 wrote: that Katasuke is involved in Kawaki's creation. I don't think he is directly involved, but it seems like a no-brainer that they abused Katasuke's knowledge for various ends, not just the Ninja tech. We already saw one Inner use his Kote device, we saw in the Movie that Katasuke was involved in Ninjutsu development and we saw in the recent chapter that he was involved in puppet jutsu and all the possible implications that has (Chakra shields anyone?). The Kote itself is essentially a combination of sealing jutsu and puppet mechanisms. The possibilities here are truly endless.

Though i don't think the Vessel IS kawaki. After all, it's a vessel, but a vessel for what, for who? Kawaki could be someone who hijacked the vessel or the final form of this vessel, but right now i don't think he is "kawaki".