Multiverse DC Comics: Encyclopedia II - Multiverse DC Comics - Contact between universes

Multiverse DC Comics - Contact between universes

Most inhabitants of the Multiverse are completely unaware of the other universes. The first character to cross the gap between them was Barry Allen, the Flash of Earth-One, who accidentally vibrated at just the right speed to appear on Earth-Two, where he met Jay Garrick, his Earth-Two counterpart.

Other characters with super-speed powers have been able to duplicate the trick, but it has not been done routinely. Magic and technological devices have done the job as well. The Justice League of America's "transmatter" device (ordinarily used to transport between their satellite headquarters and the ground), was pressed into service for annual events in which the League and some of their counterparts on other Earths faced a universe-crossing "crisis" of one sort or another. Writers have occasionally put characters from different Earths together in the same story without explanation, a continuity error often cited as a reason for eliminating the Multiverse in Crisis on Infinite Earths.

Adapted from the Wikipedia article "Contact between universes", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki