Soooo… Time for a recap post? Here’s what we know:

• the moonlight child only appears during the full moon => it’s implied that he can only materialize the night magic is at its strongest

• Considering that his OD never led to the brand reacting, I doubt he comes from “the Underworld”

(and btw)

• Griffith 2.0 does not disappear during the full moon, so it can’t be the demon infant getting his body back just for one night

• Casca’s attraction to the moonlight child is very reminiscent of how she used to react when the demon infant was nearby

(and the child himself is very attached to her which could be a hint because, in comparison, the demon infant always made sure not to get too close to her, probably because he knew the brand would hurt his mom)

• Femto commented on feeling the demon infant’s fear for his parents, so we know the infant always seeked to protect them and that’s also exactly what the moonlight child did with Guts and Casca every time he appeared

(the demon infant also knew that Guts loved Casca dearly, that’s why he warned him about going to save Casca, and so does the moonlight child, since that’s she he used to bring Guts back from the berserk mode twice)

• he’s not an envoy of Danan, Gedfryn confirmed as much in ch344

• bonus: like mother, like son?

(Side note but whenever he materialized, Casca acted more rational and like an adult than when he wasn’t around: she would feed him or be scared of him climbing up, when usually she couldn’t even eat by herself or realize whenever she did something dangerous)

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So anyway, it’s nothing new that there are too many similarities between the demon infant and the moonlight child, which is why a lot of readers (not everyone, I’m aware of that) think the two are the Gutsca baby.

Previously I proposed that the moonlight child could be some kind of ‘incarnated dream’ of the demon infant, but it’s not certain that it would make sense with the child disappearing inside of the World Tree, which is a “dragon’s road” between different realms? At the same time, in vol28, the World Tree wasn’t a thing yet either so…¯_(ツ)_/¯

These days now though I’m wondering more generally about what if the moonlight child is the demon infant’s ego?

Because this would solve why he can only materialize corporeally during the full moon, “the nights magical forces are at their strongest”, while the demon infant remains Femto’s vessel at any given time. 

In other words, Femto possesses the body of the demon infant in order to exist in the corporeal world, but the child’s ego disappears/disappeared: 

• either after what happened in vol22 (because Femto found him to be a liability after baby literally influenced him to go save Casca for example) 
• or only when the full moon comes because strong magical forces give him the chance to materialize elsewhere to see his parents.

That could explain why he appears/disappears randomly exactly where Guts and Casca are, as well as why he’d be naked when showing up. What I mean is that I doubt the moonlight child exists corporeally elsewhere aside from the full moon where he is with Casca and Guts. 

Besides, I find the way the moonlight child appears to Guts when in Berserk mode is quite similar to what Schierke saw the first time Guts used the armor:

And so I’m wondering if the similarities aren’t on purpose. 

It’s also obvious that the moonlight child is related to Light in general, if just as the light bringing Guts back when he lost himself to the armor’s power, which is why I also proposed previously that he may be the real hawk of light that everyone sees in Griffith 2.0. 

Another important point to mention is that the moonlight child apparently grew up in just one lunar cycle and there again, I wonder if this isn’t related to how Femto’s power is rapidly expanding, like with the World Tree for example.

The more Femto achieves victory, the more his influence and thus probably his power grow (and the more chaos grows closer), so if the moonlight child is linked to the demon infant who himself is Femto’s vessel, then this might explain why he’s visibly growing up along with Femto’s influence over the human world.

I guess this point might also explain why the second time the moonlight child 

could remind us of Griffith 2.0 (if just with the hair), which is in my opinion one way that Sensei has to hint that the moonlight child is related to Griffith 2.0…

who, again, is the result of Femto fusing with the demon infant’s flesh.

Finally, Sensei creating two entities for just one character (demon infant + moonlight child = Gutsca baby) would make sense considering certain… upcoming problematics, like, when Femto does get married to Charlotte for example which should probably be soon in the narrative.

I mean, the body Femto is inhabiting is the demon infant’s, the body of Guts and Casca’s child who should be like… 3 years old??? 

So in case something like a wedding night happens, well, I’d rather Sensei found a way to make it clear that Femto is 100% the one who has sex with Charlotte instead of the child himself, if you know what I mean?
The moonlight child being everything that used to be the demon infant (so his ego), besides his own flesh that now belongs to Femto, could solve this. 

Same for when Guts and Casca will ultimately face Femto in order to kill him. That way there could be hope left for their child’s survival.

An ego represents a person fully enough in any case, as we could see with Guts’ when he used the armor for the very first time: 

That’s why I’d enjoy the idea!

I hope it was clear enough considering how complex the universe of Berserk is. Thanks for reading!