Yeah, that was weird to me; Kyle is called Soul of Adam by MotG in the last Story of Evil novel and I thought that was suggesting Adam reincarnating across time like Eve and the Twins, but with the info in Pierrot, it no longer makes sense, unless she was just mocking him for his resemblance to Adam and even that doesn't make a whole lot of sense. Though, the blue-haired Marlons could be explained by the theory that Maria's lost child was some ancestor to Karchess Crim....if that theory turns out to be true anyway.

Concerning Maria's firstborn, I believe that he was actually Irregular, and that the Crim line was born from Adam's unnamed father (assuming he was born by normal means, which isn't stated so that's up for debate.)  I think that that's why Irregular appears in MotC's womb once Eve is no longer in the doll, and why Hansel explains that "someone else" is in there when Irregular attempts to grab the doll.  Maria is the only entity that can birth Irregular <--My personal belief.

Concerning the "Soul of Adam"(SoA) references throughout the years, I think that it's more figurative than literal.  Also, the theory that the SoA are his reincarnations seems to imply that he only reincarnates in those who share his bloodline, which hasn't been (proven) to be the case with H&G, the paragons of reincarnation.  I'm not saying that he can't be reincarnating as such, just that I find it unlikely.

Instead, I think that a SoA is someone who parallels the role that Adam played in the world during his lifetime.  The main person that comes to mind in this assumption is Kyle; he parallels Adam in that his actions resulted in an insanity in a woman that loved him, which in turn resulted in a great tragedy.  Adam/Eve resulted in the Original Sin, Kyle/Riliane resulted in Genocide.  Another possible example is Gallerian/Nemesis resulting in World Destruction, though this is a different kind of love (father/daughter as opposed to romantic love) and I don't think that Gallerian was ever actually referred to as the SoA.)  The parallel is still there, however, and Gear, the current SoA, does seem to have some sort of connection to Gallerian.

Yeah, I don' t think it could be Irregular; it's been well-established by now that anyone who is represented by the Kagamines is associated with Levia and Behemo some way, and so if he were the son of Maria Moonlit, that would leave the question of why he resembles the others. As for Adam, in QoTG, Levia and Behemo tell Maria to create vessels for them "the same way she created [her] son Adam", which to me seems to imply Adam is a ghoul child or otherwise artifically created.....though, I suppose that doesn't rule out the possibility of him having a father.

I forgot that Levia and Behemo mentioned Adam by name - you're absolutely right, that was an oversight on my part.  I also aggre that it does imply that he's a ghoul child.  I would be interested to see if Maria was the first person to take this "Divine Seed" and used it to birth Adam - her prophecy leaves a lot to the Imagination.

Regarding your statement about Kagamines->Twin Gods, punishment is represented by a Kagamine, and he doesn't have any (known) connection to Levia and Behemo.  Personally, I don't actually consider him relevant to that point, because he is an artificial machine and there are a great number of him, but I think that a lot of other people might consider him relevant, since technically he's one of the four Lens associated with the Four Endings, so I figured I would point it out.

Does your statement that they're all connected to Levia and Behemo include Allen and Riliane? Cuz their only connection was an interrupted destiny to be reincarnations of Hansel and Gretel.  They didn't actually partake in that destiny though, and their appearance is really the only thing left associating them with the Twin Gods.  If that appearance can be determined even before conception, then it's not a huge stretch to say that Irregular, who's purpose is completely unknown, COULD have an unknown connection to the gods, especially if you think (like I do) that he's the son of their prophet.  But I'll admit that my theory has it's flaws, like all of the things floating around in my head.

Except that the entire point to H&G were they were born from "god seed" and human eggs. They had a "father," although not a conventional one. They're from artifical insemination, which if anything, implies Adam is the same. They are not noted as ghoul children as of this point in time, so by extension, neither is Adam.

Hansel and Gretal are considered Ghoul Children, though; the wiki came to that conclusion a while ago.

Friendly reminder this topic is about the Clockworker's Doll post-Merrigod Duel and the identity of MotC. Just keep that in mind as you delve deeper into this.

Apologies, it's easy to get sidetracked.  

My theory is Maria.  She has the Swap Technique to at least somewhat account for her soul's apparent movement and obviously already shares parallels with MotC.  If it's guessed that she's reincarnating instead of soul swapping, then the aformentioned dilemma of how and why she's reincarnating comes up, and there's not really a definite answer to that right now.

I think it's Maria, too. It's just a matter of filling in the blanks of how she got there and where her spirit was in the meantime

Yeah, there haven't been any other characters depicted to share her personality/disposition before MotC, so it's hard to get a concept of where she could have been.  I'd like to think that she has a direct link to Michelle Marlon (assuming she reciprocated her father's obsessive/devoted love to her) and that's why she ended up finding the Clockworker Doll and inhabiting it while Gallerian owned it.