The information surrounding certain characters has always been less than satisfying.
Let's quickly review the facts, and summarize why they're difficult to interpret. Beginning with Roger, then Luffy as logical starting points, we'll move on to Momonosuke, Vivi, and Shirahoshi. After discussing these characters, we may discuss both Blackbeard and Im, and how they may fit.
1. Roger had a mysterious ability referenced as, The Voice of "All Things".
2. Luffy seems to have the same ability that Roger did or at least the potential for it.
2a. With some observation, it is noticeable that when a person like Roger or Luffy is using this mysterious ability to hear voices that the function of the voice changes depending on whether it's a living or non-living entity which is speaking. Without going into too much depth, non-living entities don't seem to be able to create telepathic links with living entities, and not all living entities can create telepathic links because many living entities don't possess a mind (only some of the most highly developed ones do).
4. Princess Shirahoshi hears Sea Kings.
- Roger and Luffy can hear Sea Kings, too.
5. Momonosuke hears Zunisha.
- Roger and Luffy can hear Zunisha, too.
6. Vivi has not made any indications that she can hear the voice of a life form similar to a Sea King or a Zunisha. However, she does have an affinity to Birds and Flying.
7. Im had pictures of Luffy, Blackbeard, Shirahoshi, and Vivi. However, no Momonosuke picture was shown (Hmm... maybe because there is NO wanted poster of Momonosuke!!)
8. Before the Reverie, Vivi went into a high-place (the lookout) to enjoy the sky. However, Igaram warned her not to go up there because a *large monstrous bird* might swoop down and take her away. (Vivi is commonly seen in high-places to enjoy the sky with her flightless birds).
9. Blackbeard and Luffy have a nemesis relationship. Im may see Luffy and Blackbeard as Lights that he/she wants to extinguish. The reasoning here may be that Luffy and Blackbeard represent Gods - and I think the reason why Blackbeard is considered a God is because he is the embodiment of Darkness meanwhile Luffy is, in effect, the embodiment of Light (the Sun God). The relationship Luffy and Blackbeard have may be separate to the relationship that Vivi, Shirahoshi, and Momonosuke share. As in, they may be entirely different types of threats in Im's perspective. Luffy and Blackbeard may represent, as people say, a Sun and Moon God. However, I would describe it as a Day and Night Gods or Light and Darkness Gods. In any case, if they do embody these fundamental aspects of nature then they may be held to a God's scale. Particularly where it may concern Greek mythology - they would be Primordial Entities that were born of Chaos. The Rain God, the Forest God, and the God of the Land, as well as the Oak God are all entities that may have been born from an even older entity (primordial) called Vearth. However, when they pay tribute to the Oak God (Kashigami) they may be seeking retribution or some other means of salvation from damnation from all of the Gods (how does feeding the Oak God appease the other Gods? I don't know). This is all personal perspective on my own part.
So... that's about as much as I could muster for that. That made me hungry.
Uhhh... I hope Vivi pulled a Poseidon on everybody at the Reverie and summoned like 8-12 Sky Kings when she started screaming. Because, like, they're in the sky at the Reverie. Not on the land, and not in the sea. So, even if Momonosuke or Shirahoshi wanted to do something about that situation the Sea Kings and Zunisha probably wouldn't be able to do much. (that is questionable because they're huge.... why Poseidon couldn't summon a dozen Sea Kings to just ram themselves into Pangaea Castle or something is beyond me). In any case, Sabo is supposedly dead. So, it seems like things really went to s*** up there and I don't think any of the good guys were able to get away easily. So, that begs the question, what miraculous feat did they pull off to escape the clutches of the most sinister villains on the planet - The Celestial Dragons - if they escaped at all, WITHOUT someone like Luffy and his plot-armor to help them through it. They had to potentially face-off with Rob Lucci, Bodyguards from every country, Bartholomew f***ing Kuma in Robotic Slave form, two New Marine Admirals, and who knows what else? All the good guys had going for them was a motley crew of high-ranking Revolutionary Army members, including not least of which the second-in-command of the entire army (Sabo), a few Dwarves with Devil Fruits including the Sewing Guy and Princess Mansherry so at least if they get blown to pieces they can be sewn back together and miracle tears to keep them from dying. Also, nobody else has made this connection, but ya, apparently that was NOT enough to keep Sabo in-tact by the end of it. Whatever they did to him was so damaging that he could not be (1) pieced back together like Humpty-Dumpty and the pain he withstood could not be healed by (2) miracle tears. If this was a game, at worst, [Miracle Tears] is supposed to cause a person to have their entire hp bar greatly replenished or entirely replenished. At best, it revives a person when their hp drops to 1 or 0 which means it effectively saves a character from death.
In conclusion, the God titles may not all be connected to each other, and there may even be a hierarchy to the Gods based on how old they are (primordial vs. non-primordial - if they are Gods at all). The Voice of all Things seems connected to Joyboy, Luffy, Roger, Momonosuke, Vivi, and Shirahoshi. Blackbeard has shown no indications that he hears Voices like the others do, but, he does embody Darkness which, in essence, doesn't even attempt to hear voices, but rather returns them to nothing. (nothing may refer to the nothingness that existed before the creation of All Things = Darkness existed before Light). With that said, Blackbeard's dream may be the end of the world or the galaxy or the universe itself with the end goal turning everything back to how it was before light existed which is when only chaos existed and a void of nothingness composed the universe. This nothingness in Greek Mythology, and in Buddhism, has given rise to such titles as The Abyss, The Netherworld, The Void. From Chaos the original Primordial Entities were created, and the Gods are their children in Greek mythology. Moreover, in Greek Mythology, they speak of Gods as possessing Endless Bodies, and Vivi as well as Shirahoshi make references to the Sky and the Sea being vast/infinite/endless. In Buddhism, the Endless Mind, Endless Body, and Endless Spirit are concepts associated with Heavenly Conqueror's who fight on the field of dharma (the field of dharma is interpreted as a biomagnetic field surrounding life forms relating to karma and fate).
Obviously, things seem to carry a mix of both Greek Mythology and Buddhism to great extents throughout the story. Poseidon, Pluton, and Uranus are all gods in Greek Mythology. Meanwhile, Luffy himself looks like one of the Five Wisdom Kings in Buddhism.
All in all, though, it's difficult to say just what is happening with everything.
Notes on Mansherry and Leo
Stitch-Stitch Fruit
Usage
Leo uses this power to stitch and hold down his targets. He also uses this ability to support objects during earthquakes, to make sure they do not fall.
It can also be used to reattach severed limbs, although irregular wound edges may compromise its efficiency and it will not heal the wound.
Heal-Heal Fruit
Mansherry ate the Chiyu Chiyu no Mi, a Paramecia-type Devil Fruit that gives her the ability to instantly heal any living being's injury. Mansherry can use her power in several different ways, including her tears. [Miracle-Tears]
Just think about that... the disadvantaged good guys at the Reverie had a person who could stitch them together like Frankenstein as well as someone who could heal any injury - and yet, somehow, Sabo got killed. Ha.
We are supposed to assume that he died due to the "Captain's Resolve", I think. He tried to pull a Luffy and save everyone, but he ended up sacrificing himself to let them get away. That may not be what actually happened, though.
