WARNING: The following contains spoilers for BRZRKR #4, now available from BOOM! Studios,

In BOOM! Studios' BRZRKR, Keanu Reeves' immortal warrior, B, has had a very difficult time of late working with the U.S. government. He's carried out dozens of assassinations for them, all as part of a special project where a science team led by Diana tries to cure and clone him. This is all part of B's way of handing off his legacy and dying in peace. And as Diana probes even more, she uncovers a dark secret that changed B's life forever in BRZRKR #4, by Keanu Reeves, Matt Kindt, Ron Garney, Bill Crabtree and Clem Robins.

Flashbacks from a therapy session show the warpath B was on 76,000 years ago. He kept killing for his tribe, with his father unleashing him time after time again as the weapon known as Unute. His job was to slaughter rivals, whether they were innocent or not, so the clan could pillage.

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This repetitive murder streak traumatized the warrior, so his mom prayed to the gods that impregnated her. Now, we see the result of this ritual: she got an ornamental claw that was meant to take away his pain, potentially removing his healing factor and possibly killing him. Sadly, B's dad chucks him into battle as this conversation takes place, once more near their valley as another tribe comes for blood.

Believing that he's only a tool of death and destruction, B is fed up with killing women and children, yet he still leads his dad's battalion out. Sadly, they discover it's a distraction, a trap to draw them away from their village. When they get back, though, it's too late, and B finds his mom murdered. Enraged and emotionally shattered, B leaves, allowing the rivals to slaughter his father as he cries out over the pain of losing his wife and now, watching his son abandon him. Ironically, the claw's spotted at the site, which may suggest an archaeological dig would be needed to unearth it in the present.

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B marches directly to his rivals, allowing them to gut him mercilessly. He lays his arms down and is torn to pieces, with the vultures picking him off over the next few days. This is why his memories began to be locked away, and it's what Diana's been uncorking with her experiments. B would end up forming a cocoon and emerging again days later, which hints at what the rebirth process is like.

Coincidentally, Diana sneaks out of the base to discuss some secrets with him at his home that the project officials don't know, which might even address the claw. It remains to be seen if B can trust her, but she might be his only hope of regaining the humanity he lost that day and became wracked with guilt.

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