User blog comment:Kunoichi101/Chapter 965: Wano's Dark Truth/@comment-29391896-20191213100802/@comment-30887974-20191213203213

I'd say that Teach is more than that. I see the circumstances as Teach idolised Xebec and is privy to information about Godvalley incident where (possibly) Whitebeard did some kind of doublecross to his former captain that lead to Webecs death. So in his quest for vengeance he sought the Yami Yami no mi and while being in Whitebeards crew made it more likely to get, it also gave him a opporunity to do some harm to the man he (Teach) despited the most after Roger. That is what Teaches face is telling Me