Judging how the things are looking, you can OBVIOUSLY see that Guy/Gai will transform and use all of his 8 Gates, otherwise, they wouldn't stand (that much) of a chance against Madara.
That and what the text in between panels says here about 667....
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I'm curious as a pup in a room full of butts about where Madara remembers Gai from though!?! Kisame dealt with Obito, not Madara right? Also, Gai is the same age (roundabout) as Kakashi and Obito, so Madara was in his cave when Gai was like 10. Is it possible that Madara knows a relative of Gai? Or maybe his sensei, who probably sported a green speedo with even bushier eyebrows! Hahaha That'd be great! I'm gonna go ahead and call it, that's where Madara knows him from. Probably the same guy that taught Madara taijutsu, but never taught him how to open the eighth gate! Just like how Pai Mei taught Beatrix Kiddo the five finger palm exploding heart technique but didn't teach it to Bill, who was subsequently killed after said technique was used to finally "kill" Bill
