Nova 0:0
Nova 0:0 (Robert Rider) is a fictional character, a comic book superhero in the Marvel Comics universe. He is a visitor to the mainstream 616 timeline. In his original timeline he, not his older brother Richard Rider, was given the Nova Force powers.
Fictional character biography
Nova 0:0 is the alternate reality version of Robert Rider the younger brother of Richard Rider aka Nova. In his reality he stayed behind to help Xandar after their war with the Skrulls, because of this his earth was destroyed by a threat known as the Deathstorm. Nova 0:0 traveled to the Marvel 616 earth to prepare Richard Rider, (the Nova Corpsman for that reality's version of earth) for the impending Deathstorm. Nova 0:0 would often fight with Nova in order to push Nova into using his powers in ways he never had before. Nova 0:0 would later sacrifice his life to stop the Deathstorm. Richard Rider buried Nova 0:0 on the planet Mars.
Years later in the mainstream 616 reality that version's Robert Rider would become empowered as a member of the Nova Corps.