"Fakesaw man" is a piece of Pochita, or a devil that has eaten a piece of this character. He's meant to be a parallel to Gun Devil's weird situation
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TL;DR: Fakesaw man could be a parallel to the situation with the Gun Devil, so he could be a regenerated piece of Pochita, a Devil that ate a piece of him, or a Fiend that was born out of a still living part of Chainsawman
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Was watching some videos about the manga and i rewatched a part talking about the Gun Devil that made me think about some stuff
Gun devil was divided in pieces, both great chunks and small bullet pieces. Despite being separated years ago from the main body they were still alive and were constantly trying to reattach to each other, so much that they could be used to locate more pieces of Gun, and even tho the part that was almost killed by makima was just a fragment of the devil (the chunk belonging to america), once it was weakened enough it was able to turn into a Fiend, despite not being the total devil. And even after Denji killed him in the body of Aki, it's strange that the death of the gun devil didn't seem to make countries talk about their pieces of the devil dying, so it could be that they are still alive (or it could have happened offscrean, but let's consider this possibility for later)
It's very probable that this can only happen to stronger than avarage devils with good enough regenration to keep themselves alive even as fragments
So i was thinking what if something like this could be happening witn Fakesaw man? We know that Pochita was hurt when he met Denji, and while we can theorize it can be related to the fight he had with Makima, War and their minions, what if this is the result of that fight? a chunk of Pochita/Chainsawman was separated from the main body, and bc Pochita lived, and he was a strong devil, this piece managed to stay alive, and presumely kept living and doing god knows what until he appeared in Part 2
Now, this could have different functions in the story if it was true
It could be that "pochita" was the heart of the main body, since scaping a difficult situation by throwing away his heart and having it regenerate somewhere else is not only something shown in the story, Denji explicitely mentions it a way fo fighting he remembers doing, which could just be a callback of that part of his fight, or could be forshadowing for Pochita having done this before the start of the story. This would metaphorically and literally make the body heartless, which could explain why he killed Yuko, makima mentions chainsaw man killing the devils he helped back in hell, and bc she was in need of help bc of her situation, he came, and "helped"
This could be a way to have Yoru's motivation, killing Chainsaw man and transforming him into a weapon, be able to coexist with Denji not having to permanently die if Fami's plan is to have both War and chainsaw man fight the Death devil
This could be used as a pretext for the story to tell us more about the past of Pochita as the powerful Chainsawman, since the story seems to be pushing Denji to get stronger by being feared as Chainsaw man, we could have a return of the state he was during the final chapters of Part 1, the heartless and demonic hero of Hell
An Alternative is that this is not a still alive piece of Pochita, but rather a Devil that has eaten a piece of him
Once again returning with the Gun Devil comparition, his fragments were so powerful that when Devils ate them, they got even more powerful, presumely the bigger the piece, the bigger the boost in their power was. And this also happened with Darkness devil, since Santaclaus got a piece of his flesh, and after eating it, she not only became way stronger, she also adopted some features resembling the Darkness devil. All of this happening while the Main body was still alive
So Fakesaw man could be an example of this, a devil (probably one of the fans of Chainsawman, like Makima and the angel named Devils), which got powered up by eating a fragment of Pochita
A final alternative is that this is a Chainsawman-fiend. Again with the Gun devil comparition, a piece of the whole Devil was able to become a Fiend, and there is a big chance that nothing happened to the other parts of the Gun devil when Denji killed him as a fiend as previously mentioned. So the idea that a piece of Pochita was able to stay alive by entering the body of a human is not impossible, and this could explain a detail that i have not talked about during this theory: If Fakesawman is a part of the bigger Chainsawman, why is he so human looking? he seems to look more like either Denji in his hybrid form or hiim in this form when he's low on blood, so the chainsaws are still out but the head is human (like the people who made a contract with the Fire Devil)
If this was a fiend, it would be easy to explain why he looks human, he's in the body of a human! lol
In the end the most probable answer is that Fakesaw man is related to the Fire Devil plot, but some people seem to think that could be a red herring, and i agree! But this is just speculation at the end of the day, so you are free to believe it or not. Thanks for reading ^^
