IIRC Kaizer once mentoined, that Guy would have Kakashi Susano'o as his bond-mystery-link. But it has been a while and I don't remember in which video he said that.

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I know of the Edo Minato and Naruto Kurama attack, the Minato and 3 midget attack, The GNW Hinata and Naruto Kurama attack, what others are there????

It's one of the unreleased bond skills. So for this you would need the Kakashi Susano'o's assist card equipped to Gates Guy and probably lvl 25 total with your cards on him, like Minato Jonin's bond skill.

There's also unreleased bond skills for Hidan DP (requires EGF Kakuzu) and Sasuke Susano'o (requires Itachi Susano'o). The descriptions of them have been on the Proxy for like over a year but I don't know if they will ever be released for us.

It's actually released, not unreleased as the Korren said.

And also as Korren said, Kakashi Susano'o + lvl 25 total.

C*so confirm that Hidan DP (w/ kakuzu egf), Sasuke Susano'o (w/ itachi susano'o) are unreleased.

Hinata GNW (w/ naruto kurama)

Naruto Kurama (w/ edo minato)

Edo Tobirama (w/ edo hashirama)

Edo Minato (w/ edo hiruzen + edo tobirama + edo hashirama)

Minato Jounin (w/ Obito boy + Kakashi boy)

Itachi Anbu (w/ shisui) [actually unsure if this one is released for us as I don't have itachi anbu]

Whoops my bad, yes the Guy/Kakashi bond skill is released for us. I just never see anyone use it so I kind of forgot lmao. And yes the Itachi/Shisui bond skill is in the EN version too, I've actually seen that one used a bunch of times.