Jon Ross is the son of Superman's long time friend Pete Ross, his mothers identity is unrevealed and she would pass away when Jon was still young. When Jon would begin to lose the will to live, his life would be at risk prompting Clark Kent to reveal to the boy that he is really Superman. At first Jon would not believe it, until eventually Superman would convince the boy, restoring his will to live. The boy would next become a target of Mr. Mxyzptlk who attempts to impress Jon with his powers until Superman banishes the Imp from Earth again.
Key to the Future
Sometime later, Jon would be kidnapped by the Nyrvin race, prompting Superman to go to the boys rescue. However, the Legion of Super-Heroes would stop the Man of Steel from rescuing the boy, telling him that he is destined to become a great champion of in the future, bringing end to the Millennium War that would usher in the era of peace that the Legion comes from. Despite his reservations, Superman would agree to this and Jon would be left on the Nyrvin homeworld, but not before the Legion would inform the boy of his destiny. Jon's father Pete would not forgive Superman for leaving his son in space and would pull Superboy out of the past and possess his body in a failed attempt to get revenge, being institutionalized thereafter.
However, with Pete's sanity continuing to diminish, thanks in part to the manipulations of demoness Tala, Superman would manage to resist fate and rescue Jon and reunite him with his father with help from the Phantom Stranger, Pete and Jon's reunion would restore Pete's sanity.
Crisis on Infinite Earths
Following the events of Crisis on Infinite Earths, Jon was erased from history. In the New Earth universe, Pete Ross presently does not have a son named John, but a boy named Clark through his marriage to Lana Lang.
How Superman's rescue of Jon would effect the future that the Legion of Super-Heroes existed in remains unrevealed. However, following the events of Crisis on Infinite Earths, Jon's role in the Legion's future has likely been erased and replaced by some other event.
- This version of Jonathan Ross (Earth-One), including all history and corresponding appearances, was initially erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. However the ending of Convergence retroactively prevented that collapse, saving all the alternate realities, though in an "evolved" form. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 8 Appearances of Jonathan Ross (Earth-One)
- 1 Images featuring Jonathan Ross (Earth-One)
- Quotations by or about Jonathan Ross (Earth-One)
- Character Gallery: Jonathan Ross (Earth-One)