There are a couple that I have on the brain!

1. Childe will get a new transformation. Since Childe's strength and skill has constantly increased over the course of the story, it's only a matter of time until he gets an entirely new transformation altogether. I have my own personal vision as to how that transformation will most likely look, but since it ties into larger theories I'll have to keep that tidbit to myself lol. In any case, maybe if we'll lucky, that potential new version of him could even end up being a playable unit...who knows.

2. Skirk will acknowledge Childe's strength and deem him worthy. This particular one is both a prediction and a wish, one that I've had for years. In Childe's voice line about Skirk, he mentions how he hopes that he can get her to use both of her hands to beat him someday (implying she only ever had to use one). Ever since then, I had an ongoing prediction that we'll eventually get an on-screen spar between Skirk and Childe, where Skirk is forced to use both hands during the fight. Not only would it be a wonderful and exciting indication of Childe's growth, but it would also positively impact the dynamic of their relationship.

3. Teucer will witness the Foul Legacy Transformation. Childe's act I story quest served as massive foundation for his future character development as well as heavy foreshadowing for his future role in the story, but it also set the course for the relationship development between Childe and his family, especially Teucer.

The majority of Childe's story quest entailed "protecting" Teucer from the true, darker nature of his position as a Harbinger, by playing the role of a "toy salesman". He goes to great lengths to prevent Teucer from learning the truth, and it eventually ends with consequences for Childe himself, injured heavily from having to undergo a second transformation...while still recovering from his previous transformation during the events of the Liyue archon quest.

There were strong implications sprinkled throughout the story quest that Childe wouldn't be able to hide the truth forever; even the consequences of his actions delivered via the narrative appear to reflect this. Childe's ideal to protect childhood dreams and innocence -- especially Teucer's in particular -- is only a temporary solution to prolong the inevitable. The story quest even teases us, in a way, by creating the scene where Teucer turns around, only to find broken ruin guards, while Childe had already quickly hidden himself where his little brother couldn't find him.

But Teucer uncovering the truth, either by accident or by Childe's own admission, wouldn't be a bad thing. In fact, it'd be a step in Childe's own development, while also strengthening the bond between him and Teucer even further. After all, there are significant, blatant parallels drawn between Childe's Foul Legacy transformation and "Mr. Cyclops", Teucer's beloved toy. He'd love Childe's transformation, that much is clear; he'd get those starry eyes just like in his official art. And my prediction within a prediction is that Childe would not expect a reaction like that at all. Going by Childe's behavior and his determination to hide it, he presumably thinks Teucer would most likely be afraid...and doesn't want to risk finding out the reaction. He most likely assumes that his little brother would no longer idolize him after learning the full truth. Getting that opposite, positive reaction however, will show Childe that he can be a bit more honest around the ones he loves, without the fear of losing them completely. In other words, he'll have the opportunity to experience the beauty and warmth of unconditional love.

1. Childe will play a significant role in saving Teyvat. This one's a bit of a loaded prediction and I won't go very deep into all of my reasons for this since it connects to certain major theories, but there are about 100,000 reasons as to why I'm absolutely convinced of this and just sitting back waiting for it to happen. What I will say, though, is that this ties back into my previous statement about Childe's act I story quest, and the heavy foreshadowing it contains about Childe's future role. Outside of the factory, Childe and Teucer had a brief conversation:

Teucer: "Brother...someone was saying that Mr. Cyclops is a killing machine..."

Childe: "Were they, now? What a silly thing for them to say...And you shouldn't go repeating it either, Teucer, you're far too young to be talking about such violent topics."

Teucer: "Yeah, I knew that they were lying anyways. Mr. Cyclops is here to defeat the bad guys and protect the world. He's my favorite toy!"

Note how Teucer's belief is that Mr. Cyclops will "protect the world" (What's even more hilarious about this blatant foreshadowing is that several months ago, we received an announcement that Childe's Foul Legacy would be getting a real-life purchasable action figure. As in Foul Legacy is becoming a toy. That's so fitting that I could scream. I did scream). Between Childe's hero coding, the implications of his story quest, and the curious foreshadowing delivered through various parts of Fontaine, it's definitely safe to predict that he'll play an integral role in saving Teyvat...that is if the planet isn't already lost.

1. Childe will have a second boss fight. This one's due to the implications of Childe's voice lines, as well as his line to the Traveler in his act I story quest. Many of his voice lines advise the Traveler to stay alive, because they can't exactly fight him in a "battle to the death" if they're dead. Then there's the SQ line, where he says, "Let's not forget our promise, now. Let's have a rematch when we get the chance. This time, with my honor as a Harbinger on the line."

I imagine that this potential boss fight would also lead to a shift in the Traveler and Childe's relationship, though the way in which it would change isn't something I can presently envision with clarity, since it'd be highly dependent on the circumstances surrounding the boss fight.

And that's about it! Technically. I have more than that but I'll save those lol. Hope these predictions give you something to brainrot about :) that is if you're not already brainrotting about all of these things.