Most items are uploaded by the community and are available for free download or streaming, intended for non-infringing or fair use research and preservation. This makes the Internet Archive Mazinger Z a primary destination for fans and historians tracking the evolution of the mecha genre. Uploading – A Basic Guide - Internet Archive Help Center
Perhaps the most valuable artifact in the archive is the infamous . In the late 1970s, Hanna-Barbera produced a bizarre, heavily edited English version called Mazinger Z: The Robot of the Ages . They changed names (Koji became "Tommy Davis") and spliced episodes together. Large chunks of this dub were considered "lost media" for years. Thanks to the Internet Archive, collectors have uploaded recovered reels of this historic (if laughably bad) adaptation. Mazinger Z Internet Archive