a question waaaaay back

[fati]

should be madara , and no he cannot be minato, for edo tensei to work the user should bring back the soul.

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if oro tried to bring back minato he would see that he is not returning

 

[ShinobiAliance]

Obviously was Minato....He was invoking the Hokages... so if Hashirama and 2nd were summoned... the remaining one would be Minato... And the 3rd didnt want to have to fight all three for obvious reasons...Hashirama and Tobirama super powerfull combo and heavy ninjutsu holders... Minato Super speed + rasengan+Minato sealed part of the kyubi chakra... and the third knew... he would be finished in a spit second...

 

[blackstar9]

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This ^^^^

 

[Ryan Ensign]

Minato Namikaze, but Oro probably didn't know it wouldn't work at the time, or he didn't know Minato used Reaper Death Seal.

 

[Bad Touch Yakushi]

It was obviously Mr Namikaze, anybody who thinks otherwise is stupid. Why would this coffin remain a huge mystery this entire time and still be a relevant plot point after all these years?

LOL NEW PLOT TWIST THAT COFFIN THAT THE SNAKE GUY DID LIKE YEARS BACK IN A COMPLETELY DIFFERENT ARC ACTUALLY DIDNT HAVE THE 4TH HOKAGE INSIDE AND HAD SOME OTHER RANDOM DUDE IN IT WHO FAILED

cmon now.

 

[Floydical]

It isn't a plothole if it didn't work...

Technically it is actually.

Kabuto directly described the fact that after the summoning is successful, the caster can confine the edo in a coffin and prepare them to be summoned later. The fact that Oro summoned Minato just like he and Kabuto summoned everyone else would mean that the summoning was initially successful. If he did actually try to summon Minato, the summoning would have initially failed and he would never have had him ready in a coffin. Now the coffin was actually never shown in the manga, but since he was attempting the summoning, its strongly implied that Oro had a coffin ready.

I hope you understand my point but yes, Kishi made it clear that it failed because Minato is sealed in the deathgod already, but technically it is a plothole based on how Kabuto described the pre-preparation process.