Crisis on Infinite Earths: Beyond the Silent Night (1985)

The real J'Onn J'Onzz, in the original continuity, finally showed up in Crisis #5, as part of a massive two-page crowd scene aboard The Monitor's satellite. A couple of pages later, Jemm: Son of Saturn was shown standing directly behind J'Onn, so this can be considered their first meeting. After a battle with the Red Tornado, J'Onzz swore, "This universe is imperilled.The new Justice League joins the battle.”

The Crisis was really hard on satellites. In #6, J'Onn held up part of The Monitor's damaged base, while offering help to the Outsider Katana and the angelic Azrael. Unfortunately, the Monitor's satellite was destroyed despite Manhunter's effort, so J'Onn joined the pair (plus the Golden Age Flash and the Legionnaire Blok in escaping to a parallel Earth. They arrived on Earth-4, the world of the classic Charlton Comics heroes. Blue Beetle, disbelieving the Monitor's story about the destruction of parallel Earths, led Captain Atom, Peacemaker, Nightshade, Judomaster, Thunderbolt, and The Question in an attack on J'Onn's team. "I'll question the how of it after I dispose of this 'Captain Atom'," J'Onn said, while blasting the hero with powerful Martian Vision. Blok then joined Manhunter in capturing the Beetle's Bug. Eventually, the Earth-4 heroes' terrified assault was revealed to be the Psycho Pirate's doing.

In #7 (Oct.'85) a group of heavyweights were chosen to enter the Anti-Matter Universe. The group included the Martian Manhunter, the Supermen of Earths 1 & 2, Wonder Woman, Firestorm, Supergirl, Wildfire, Jade, Captain Marvel, The Ray, Lady Quark, Mon-El, Pariah, Dr. Light, Captain Atom and Green Lantern Alan Scott. It was imperative that they directly challenge the Anti-Monitor, who had been destroying whole universes, then absorbing the power released by the destruction. Manhunter and Marvel stood together against giant stone guards, until Supergirl's making the ultimate heroic sacrifice to severely handicap the Anti-Monitor brought the battle to a halt. The heroes returned home, believing the threat had been ended along with the life of Kara Zor-El.