You may not have known this, but Keanu Reeves has a 12-issue limited comic book series titled BRZRKR about a violent immortal warrior named “B” who ends up working for the U.S. military to take on battles that are too dangerous in exchange for information about his life and how to end it. The Boom! Studios series comes from an original idea from Reeves. Netflix has acquired the rights to the series and will be developing a live-action feature film and a follow-up anime series with Reeves starring in the former and voicing the main character in the latter. Reeves will also produce.
Photo from Kickstarter