Teams Traveling Twin Transporting Teleporters

Thanagarian Relativity Beam Systems may have been standard on that world, but they were foreign on Earth-One. Nevertheless, when Katar Hol of Thanagar-One introduced his Justice League teammates to this device, the team began incorporating these transporter tubes not only aboard their orbiting space satellite headquarters, but also in several major cities atop skyscrappers. These devices allowed League members, and their guests, to teleport from the planet below to their headquarters above.

A similar yet far superior mechanism was created on Earth-Two. Developed by the former arch-enemy of Wonder Woman turned benevolent Amazonian scientist, Paula VonGunther developed her Space Transporter. This device not only could send those projected by its rays from Earth-Two to the hyperspace world of Venus, but also to a variety of other locations... both in space and time! This mechanism, originally located beneath Holliday College in Paula's secret laboratory, had a duplicate built on Paradise Island (and possibly other locales). However, Paula had help creating this teleporter, considerable help across space and time!

While she was briefly affiliated with Nazi Germany as one of its chief scientists, Baroness VonGunther worked alongside Helmut Streicher, also known as the Red Panzer. Streicher constructed a time-grappling device that could project and retrieve his Panzer Ship through time and space, no doubt based on technology used by his confederate Hans Gootsden. Queen Desira of Hyperspace Venus, whom Wonder Woman first met after being trapped aboard one of Gootsden’s spacecraft, provided additional guidance in assembling this device.

So it seems that the combined knowledge behind assembling the Justice League Transporter and Paula’s Space Transporter culminated in the collaboration behind the Transmatter Cubes, which the Justice League and Justice Society developed together. These devices allowed the teams to traverse their two universes as often as needed!