Books like ultimate spider-man, volume 1: power and responsibility

OZ is a fictitious artificial mutagen responsible for the creation of the Ultimate Marvel Universe's Spider-Man, and several of its other characters. The writer, Brian Michael Bendis decided that a genetically mutated spider would be the source of Peter's power, rather than a radiated one, to update Spider-Man for the 21st century.

The OZ formula is created by Osborn Industries as part of their research into super soldiers for S.H.I.E.L.D.. Despite being imperfect, Norman Osborn garners much interest in the OZ formula, while not revealing what it actually is. Osborn subsequently begins to fail, as it is unable to deliver on Norman's promises. The drug is developed prior to Ultimate Spider-Man #1 and has begun animal testing. As of in Miles Morales: Ultimate Spider-Man #6, it's revealed that the OZ formula has power of immortality, such as reviving Peter Parker and Norman Osborn from death. It is unknown if the immortality effects extends to other users presumed dead.