The Crisis on Infinite Earths effected all adjacent universes with the same eventuality (with the exception of Earths One, Two, Four, X and S... which in one timeline merged as one and in their individual timelines managed to escape their eradication through undisclosed means). An anti-matter wave of energy from the Anti-Matter universe had consumed each of these, including Earth-Three. On this occasion, the Crime Syndicate displayed for the first (and last) time true heroic mettle as its individual members had attempted to save humanity from the wake of destruction caused by this wave.
While Owlman and Johnny Quick seem terrified at the powerless situation they were faced with, the fellow three Syndicators Ultraman, Power Ring and Superwoman each did their best to save innocents caused in the path of this destructive anti-matter. With the dimension-traveller known as Pariah watching helplessly, each member of the Syndicate was wiped from existence in an instant. And while admiring his former foes' tenacity toward aiding their fellow man in this time of Crisis, Alex Luthor recognized the futility of such efforts. And, in an event mirroring that which sent an infant Kal-El and Kal-L from their doomed planet Krypton to Earth, Alex sent his son the Earth-One in a rocketship. Little did Luthor know how instrumental his son would be in saving the remaining universe while on board the Multiverse traveling satellite of the Monitor!