Keanu Reeves co-wrote the original BRZRKR comic book series with Matt Kindt, and Ron Garney illustrated. That was followed by the Bloodlines spinoff series, which follows B at earlier points in his life. In July 2024, the novel The Book of Elsewhere was released, which takes place in an alternate universe from the main BRZRKR stories.

Reeves co-wrote the comic book series with Matt Kindt, which is now being adapted by The Batman 2 scribe Mattson Tomlin. Naturally, given Reeves' ground and bone-breaking history in the genre, making him an immortal character can only spell trouble for those caught on the receiving end of B's story.

Boom! Studios’ recent action comic BRZRKR falls pretty firmly under pop culture’s tacitly understood “ Dogstar Rule,” i.e., the general acknowledgement that some things are inherently more interesting because Keanu Reeves is the one doing them.