Naruto Kabuto showed Madara a coffin. Madara was surprised, who was it?

Speculation 1: The Fourth Hokage Namikaze Minato (Madara was hit in the back by the Fourth Generation’s Rasengan when Nine-Tails attacked the Leaf Village, and was left with the Flying Thunder God mark on his body, and The contract seal is imposed. Madara's "Spiritualization Technique" lasts up to five minutes, but the fourth generation can attack Madara at any time. Because of the contract seal, the Nine Tails are not controlled by Madara.) But this is impossible because Namikaze Minato uses . The corpses and ghosts are sealed away, making it impossible to channel spirits.

Speculation 2: The real Uchiha Madara (because the real Madara may be dead. The Akatsuki organization’s Madara is fake, and Akatsuki’s Madara may be Shisui, because the other eye may have been given to Danzo . Also, Shisui’s hairstyle is very similar to that of Madara from the Akatsuki organization)

Speculation 3: The Six Paths Sage (because the Ten-Tails is really sealed by the Six Paths Sage, and all ninjutsu are performed by the Six Paths with the Samsara Eye) Founded by Sennin, he is the strongest in the ninja world. If Kabuto resurrects Rokudo, Kabuto can control Rokudo to control the tailed beasts at will. No matter how strong Madara is, he can't compete with Rokudo, so Madara is afraid that his plan will be exposed at any time. Destroyed)

The above is from Baidu Encyclopedia

There is also an unofficial speculation: Uchiha Izuna, his younger brother.

I think it can’t be Hashirama. He saw how calm Danzo was with Hashirama. If it was really Hashirama, maybe Madara would want to fight him again. After all, the first Lost once.

I have been struggling for a long time

I also want to know who it is