WMG / Code Vein

As a Wild Mass Guessing subpage, all spoilers are unmarked as per policy. You Have Been Warned.

An Aragami will be a boss in the game.

There is a God Eater collaboration weapon set for the game and the unknown origin of the Thorns of Judgement can easily be the origin of a rogue Aragami boss. It can also be used to tease at the upcoming God Eater 3 as well.

• Jossed. That being said, Dyaus Pita does cameo in a cutscene revealing that Code Vein is a God Eater spin-off.
• Confirmed. The DLC's Hellfire Knight, Frozen Empress, and the Lord of Thunder are a Hannibal, a Marduk, and a Vajra Aragami respectively.

The Protagonist and Jack knew each other before becoming Revenants.

We know that we'll uncover the Protagonist's memories during the story, as well as probably Jack's. Given how Word of God has said that they had a deep connection, it wouldn't be surprising that their relationship started when they where humans, before losing their memories.

• Mostly jossed, given that their first meeting was during Operation Queenslayer, but there is still the possibility that they briefly met as humans but they don't recall (since being a Revenant also means losing memories each time you die).

The Protagonist and Cruz are siblings.

The Protagonist is shown to be able to drink Cruz's blood without becoming a lost, which could be explained by them being related, though we don't know if Gregorio is affected by his daughter or not.

• Jossed. The protagonist is one of Cruz's "Successors" due to dealing the final blow during Operation Queenslayer.

Alternatively, Cruz did something to the protagonist during their meeting.

I am making this guess based on some footage where she seems to be caressing the protagonist, and I am guessing that this is a hint that she did something to him/her that caused them to be able to survive being shot in the heart as well as revitalizing the tear springs. Maybe she did this to further her own agenda.

• Confirmed. She made them one of her Successors.

The Protagonist's death two days before the start of the game hides another secret.

We know the Protagonist got killed two days before the story began (which might be the moment they became a Revenant), and since we know their past is gonna be uncovered, it's likely that something sinister is residing in those lost memories.

Gregorio and/or Juzo will be the true Big Bad of the game.

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Someone, perhaps the protagonist or Io, will sacrifice themselves at the end of the game to stop Q.U.E.E.N once and for all.

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• Confirmed in the Heirs ending.

The game will feature a Romance Sidequest with one or more characters.

The developers have alluded vaguely to Relationship Values in at least one interview. They've described bonding with characters to be similar to the Persona games. They could just be talking about platonic friendship, but with a cast as attractive as this, one can hope.

• Unfortunately jossed.

Your character is the Successor of the Heart.

The reason your character survives Jack shooting them through the heart, an attack that would normally kill a Revenant permanently, is because their heart was replaced with the Q.U.E.E.N.'s heart either before or after the attack. Whether this was intentionally done by Cruz, an accident, or the work of a third party is something you'll learn in game.

• Jossed. The Successor of the Heart is Karen meanwhile your character is the Successor of the Blood.

The incident of Rin's past is the reason as to why she constantly wears her gasmask, even at the home base.

Whatever happened in her past, it is safe to assume that it had something to do with the Miasma, and it traumatized her to the point that she is now afraid to ever take it off even when in a safe location.

• Jossed. Rin's trauma was caused by her panicking and abandoning her squad to die during a battle, which turns out to be untrue. It's never explained why she doesn't take the mask off at base. Furthermore, she does take it off when entering the hot spring, showing that she can/will do so when appropriate.

Mido will turn out be a Bondrewd Expy.

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Code Vein is actually a reboot for God Eater.

Or an alternate timeline where researching Oracle Cells led to the creation of Revenants. We'll see.

• Jossed. They're in the same universe.

code vein will turn out to be a prequel to god eater or will lead into god eater 4.

Code Vein takes place after God Eater 3

Some time after God Eater 3, God Eaters either start dying off or become obsolete. To replace them, oracle cells are modified to produce Revenants. While this was mostly successful against the Aragami, being a Revenant causes unfortunate side effects such as needing to consume human blood to prevent going into a frenzy, thus pushing scientists to create the Queen, leading to the events we see now.

Code Vein might actually be a prequel to God Eater 3

Given the prominence of Ash in what the Revenants turn to whenever they die, and especially if they die for real, it's entirely plausible that the whole reason the Ashlands and the Ash Aragami that turned Earth over on its head even worse than before may have been due to either a freak accident or a pre-Gaol of the Mist incident of Revenants being genuinely devoured by Aragami and accelerating their evolution on a dangerous new path. Given that the last bit of content for God Eater 3 involved Claire's Episode, and particularly Soma/Ein revealing he had six months left to live, it could be entirely plausible that Code Vein might be setting up a crossover or intervention in post-GE3 plot as a result.

• Jossed in God Eater 3. Soma/Ein's Character Episode reveals the full context of the Ash Calamity: it was a freak accident/possible deliberate reckless oversight of a Fenrir experiment and had nothing to do with the Revenants.

Revenants are, themselves, Aragami.

Juzo Mido makes reference to the fact that they were able to deal with the horrors in their isolated area of the world, “horrors” being used primarily to refer to Aragami. And only an Aragami can hurt another Aragami. So it’s entirely possible that the Revenants are capable of battling Aragami due to being Aragami themselves; or more specifically, the BOR parasite is itself an Aragami that relies on a host to feed itself. This would explain the craving for blood, and also why Revenants mutate when they lose their humanity, or “frenzy”; they lose the one thing separating them from the monsters they fight. After all, humans have become Aragami before, haven’t they?

Code Vein is a prequel to God Eater Burst

The events of God Eater turn the moon green, and since the moon isn't green in Vein, it's safe to assume that it predates those events, which happen at 2071. Meanwhile, side material for God Eater say that there weren't any Aragami bigger than Kongous before 2065. That narrows down the events of the game from around that time frame. It may even be possible that the events in Vein happen around the same time as God Eater, as the region of North America hasn't really been explored or talked about in detail.

The Operation Queenslayer memory was supposed to be the intro to the game.

It's presented in a tutorial-like fashion; a first-person view followed by a request for information culminating in a player character face reveal, explanations of basic mechanics like the mistles, wide open spaces with few instant death traps. The section was probably scrapped because it gave too much information and an air of positivity in a souls-like, but was recycled as a flashback episode because it had potential for a mid-level player to emulate at the level their flashback self would probably be at.

• This is even more likely when compares it to the God Eater series since they are made by the same company and share a universe, particularly God Eater 3 which was developed at the same time. The intro is remarkably similar, down to the first person view and unrevealed face until the main character is created, a partner character showing the player information that they should be aware of and the open areas used to teach game mechanics. In total the mission is very much in line with God Eater but might have also been scrapped to distinguish the two series from the get-go, instead aiming for a darker and more mysterious introduction which ended up being the actual first chapter.