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!

Merging of Doppelgängers: The Cosmic Treadmill's Strange Power

The Cosmic Treadmill was a device invented by Barry “Flash” Allen powered by cosmic energy. This device enabled Flash to travel through time, with positive radiation drawing him into the future and negative radiation drawing him back into the past, coordinated by pulsations emanating from its cosmic ray-powered clock. 

During the Crisis on Infinite Earths, Barry along with fellow Justice Leaguers and members of the Justice Alliance of Earth-D constructed a larger version of the Threadmill. The became an interdimensional transport for millions of inhabitants of that world, which were being destroyed by the anti-matter wave destroying the Multiverse. Working with his counterpart Tanaka Rei, Barry created another treadmill, with the ability to merge doppelgängers!

Barry shared this invention with his nephew Wally "Kid Flash" West and his counterpart Jay "Flash" Garrick of Earth-Two. Jay later created his own version of the Threadmill, the Time Vortex. This mechanism similarly allowed for guided time travel, as well as fabricating period-specific clothing for individuals using it. Star-Spangled Kid suspected it manipulated cosmic energy like his  cosmic converter belt and Starman's cosmic rod.

While on Earth-Prime, Barry created another treadmill allowing him to return to Earth-One. Now realizing it bend time and space, upon Tanaka's suggestion they modified the Earth-D version. Those individuals of Earth-D travelling through its portal merged with their "genetic doppelgängers" on Earth-One. Of course, some like Barry and Tanaka weren't genetic counterparts, and so would've remained separate.

A similar occurence happened years earlier, when the Aquaman of Earth-One encountered the city of Necrus, which shifted from its native universe to another from time-to-time. On this occasion, the beam that brought Necrus to his world also struck the King of the Seas, causing a doppelgänger of his appear to be splitting off from him. In fact, this was the long lost Aquaman of Earth-Two, whom Arthur Curry's mind was connected with during this process. Together they defeated Mecrus' leader Mongo and his evil forces attempting to invade Atlantis and attack the surface world, although at the cost of the second Aquaman's life.

The device causing Necrus and the golden age Aquaman to shift from universe to universe was a "dimensional time reflex" machine created by a scientist from a doomed world in space. While merged, the Aquaman pulled into Earth-One's universe was mentally tied to that planet's native Aquaman, as would the Earth-D citizens with the Earth-One twins.

Even the transmatter cubes, created by the Justice League and Justice Society to travel to one another's worlds annually, was used to this effect. When Earth-One was invaded by the creature known as Krogg, who had resided in the Limbo realm between universes for centuries. the Kal-El and Kal-L used the device to become a composite Superman. Just as they doubled their own power, the two felt each other's minds slowly become one.

Something similar probably occured with the Freedom Fighters of Earth-Two, recruited by Uncle Sam to protect Earth-X. Each member may have merged with their Earth-X doppelgänger, which had near identical lives to their own (aside from not being superheroes themselves) and allowing them to carry on their wartime adventures chronicled in Quality Comics.

Perhaps the most widespread effect of this occuring was when the alien Creator2 tried to merge Earth-Two and Earth-One together using the android Red Tornado's dimension-travelling ability. On this occasion, all of the worlds' citizens met their doppelgängers of he other world for a brief period.

What effect this merging had on the minds and bodies of those of Earth-One who now gained the lives and experiences of their Earth-D doppelgängers in unknown.

Transmatter Team Travelling Tales: The Final Two Times

Throughout their history, not only have the combined Justice League and Justice Society used the Transmatter Cubes for their annual gatherings, but individual members have as well. Sometimes, this has led to disasterous results, such as when the Supermen used a damaged Cube to save Earth-One from the alien Krogg and to save the Earth-Two Jimmy Olsen's life. And soon after, when Green Arrow and Black Canary used that same League Cube to travel to Earth-Two, and helped undo an alternate past created by Mark Ronsom the Ravager during World War II. Then there was the time Black Canary returned to Earth-Two to warn the Society about the Adjudicator. Each time, the Cube played a part.

Back in the present, once more the League hosted the Society for that year's gathering, only this time the event was interrupted by Earth-One's criminal Johnny Thunder who used his counterpart's Thunderbolt to immobilize all superheroes on that world. Thankfully, this provided the loophole necessary for the visiting Earth-Two heroes to avoid this same attack, and the Society along with former members Black Canary and Red Tornado aided them in defeating both Thunder and his Crime Champions. On this occasion, Canary learned that the person she thought she was... the Canary of the Justice Society, was actually her now dead mother. Shortly before passing, that Canary asked that her memories be transplanted into the mind of her decades-long comatose daughter, to give her the life denied her due to tragedy.

Following the invasion of Martian forces upon Earth-One, the remaining Justice League members ventured onboard the now destroyed Satellite in order to use the Transmatter Cube one last time to travel to Earth-Two. There, they recruited the Justice Society in helping them defeat Commander Steel and Mekanique, who had taken over their headquarters and held League member Steel hostage. During the Crisis on Infinite Earths, the Satellite would finally be destroyed along with its Cube, although the Justice Society's Cube remained in good repair despite nearly being destroyed by Vulcan Son of Fire.

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In the history of the annual Justice League / Justice Society teamups, the first ten team-ups transpired during specific times each year when they could traverse to the others' Earth. During this period, at times they would visit one another such as versus the original Crime Champions, the Anti-Matter Man, and Solomon Grundy.

 

During their second meeting, the League visited Earth-Two to help the Society defeat Earth-Three's Crime Syndicate... in the third occasion, the Society returned the favor by travelling to an Earth-One transformed into Earth-A to battle the new Lawless League. Sometimes, such as versus T.O. Morrow* and Creator2, both teams worked on the same case without actually meeting.

Then there were three occasions when the Society enlisted the aid of the League on Earth-Two to assist them in defeating threats such as the Black Sphere villains, Aquarius and the Iron Hand.

Once they employed use of the Transmatter Cubes, the League and Society attempted trading members to the other's headquarters for two simultaneous gatherings on both Earths, only to have these interrupted by sidetrips to Earth-X and New Genesis.

On one occasion, the Society hosted the League at the mansion of Earth-Two's Sandman, during the case wherein they learned of the tragic tale involving Sandy the Golden Boy.  On another occasion, the League hosted the Society at a fancy restaurant in Earth-One's Gotham City, which was interrupted by the Lord of Time and his five time lost heroes-turned-minions.

The League took an unplanned trip to Earth-Two during a case involving Cary Bates and the Injustice Society, while the Society took an unplanned trip to Earth-One to track down Psycho-Pirate and help their friends defeat Mordru. Another tale, not involving the Cubes at all, resulted in both teams working alongside the Squadron of Justice from Earth-S to save all three Earths.

The remaining actual gatherings of the League and Society seemed to favor the two groups meeting onboard the Satellite orbiting Earth-One. Such as during the death of Mister Terrific, the attack of the Secret Society of Super-Villains, the invasion of the Crime Syndicate (although in an alternate timeline, the League traveled to the Society's earlier headquarters to thwart Degaton's scheme), and the aforementioned battle with an evil Johnny Thunder. The final meeting prior to the Crisis, involving Commander Steel, had both groups travel to the other's world briefly.

So in the final estimation, both with and without the Cubes, their creators equally ventured to Earth-One and Earth-Two... for the League to aid their friends, for the Society to party with their pals.

* Morrow used his Futurenergy to create energy duplicates of five friends (Steve Trevor, Jean Loring, Shayera "Hawkgirl" Hol, Midge and Mera Curry) and one foe (Doctor Light) of the League, while Per Degaton's time machine created six temporal duplicates of the Society's old foes (Per Degaton, Wotan, Professor Zodiak, King Bee, Monster and Sky Pirate) from 1948 in 1941. The original friends and foes of these heroes existed separate and simultaneous to their "chronal-clones" on these occasions.

Transmatter Team Travelling Tales: More Delayed Detours

Continued usage of their Transmatter Cubes by the Justice League and Justice Society for their annual meetings just as often led to detours instead of relaxing parties on each others Earth. A year after their tragic last meeting, when JSA member Mr. Terrific lost his life at the hands of his arch-enemy onboard the League's Satellite, their next gathering led these teams to another dimension.

In a seeming replay of their inadvertent trip to Earth-X, four Leaguers and four Socialites were pulled to the world of New Genesis rather than one another's headquarters. Recruited by Metron with the goal of aiding he and his allies, the eight heroes joined forces with Terrific's counterpart Mister Miracle, Big Barda, Oberon and Orion. Together, these three teamss combined to thwart the machinations of Apokolips, the planet intent on reviving their exiled master Darkseid. As a result, these champions saved Earth-Two's very existence, which was threatened by Darkseid and his minions of that world's Injustice Society. These villains had planned to transport Apokolips into Earth-Two's universe, which would result in the destruction of Earth-Two itself! Presumably after this adventure, the groups resumed their festivities back at their original destinations.

As seemed to now be the custom, every other year, when not exchanging a handful of each team's members - transporting them to the other team's base, the Justice League hosted the Justice Society onboard their Satellite. And this time, the gathering was a success, without interruption. Following some reminiscing, each group returned to their homeworld filled with happy memories. Except for Leaguer Black Canary, recalling past memories of Earth-Two where she was from, or rather memories implanted from her mother's own recollections (which she would learn two years later). Processing these somewhat melancholy thoughts, Canary found herself attacked by the evil Mist who snuck onboard the Satellite. She and other members of the JLA and JSA were captured by the Mist and his allies of the Secret Society of Super-Villains, trapping them in an interdimensional limbo. 

However, the Earth-One members of the Secret Society sought revenge upon their Earth-Two colleagues, who had betrayed them. Using the same Transmatter Cube, those supervillains were able to journey to limbo and free the JLA and JSA, which then journeyed to the Ultra-Humanite's Secret Citadel to defeat he and the remaining supervillains.

The subsequent year, five members of the Justice Society used their Transmatter Cube to travel once more to the League Satellite, but this time their detour led them to Earth-Prime. There, they traded places with the visiting Crime Syndicate of Earth-Three, whom time traveller Per Degaton used in his latest scheme for world conquest. After journeying to the early 1940s wherein the League and Society teamed up with that era's All-Star Squadron, the heroes defeated Degaton and the Syndicate. This led to history reverting to a new timeline, where the Society heroes Transmatter travel led them to a now peaceful gathering with the League on the Satelllite.

Transmatter Team Travelling Tales: Twin Tales of Tragedy

The next couple of meetings between the Justice League and Justice Society were actual parties, where the heroes and heroines could sit down to a nice dinner, and enjoy themselves. Well, at first, until two cunning criminals from each of their worlds complicated things.

The first of these was a dinner hosted by the Justice League for their Justice Society compatriots at the exclusive 22 Club in Earth-One's Gotham City. Hosting an impressive array of members from each team, those gathered enjoyed this occasion until time-lost minions sent by the Lord of Time crashed their party. Inflicting most of the members with chronal energy which caused them to be comatose, only a handful of Leaguers and Socialites remained unaffected.

Tracking the five pawns of the Time Lord (Viking Prince, Black Pirate, Miss America, Jonah Hex and Rittsmeister Hans Von Hammer... the Enemy Ace) through time and space, the twin teams were able to destroy the villain's Eternity Brain which threated the existence of all time. Then, using the Green Lantern's power rings, the radiation effecting the heroes was removed. 

However, the next gathering of the Society and their friends, this time aboard the League's Satellite, was not so forgiving. At first, the evening showed promise, as individual members of both teams spent time in small talk, catching up on each others' lives. From the Society's Chairman Hawkman complimenting new member Zatanna, who served as temporary Chairwoman for this event... to Hawkman and Doctor Fate discussing the fields of archaeology they both have a passion for... two the career tracks of the two Green Lanterns... all seemed well.

However, Mister Terrific joined his Society colleagues this time, tracking down his old foe Roger Romaine who had infilitrated the gathering and mentally controlled one of those present. During this conversation, it was discovered that Jay Garrick aka the Flash  had a recent encunter with Romanine, having dealt him a humbling defeat.

Seeking to cover up his presence while also having revenge against two of his enemies, Romaine slayed Terrific while pinning the blame on Power Girl using manufactured evidence placed on the scene. Both Zatanna and Huntress attempted to uncover the true cultrpit, and each were attacked by their unseen adversary. Zatanna was stunned into a temporary comatose state when she came close to learning the truth. Following this, Batman and Huntreess used their deductive abilities to unravel the case before them.

To aid her in this process, the Huntress used the Justice League Computer within the Satellite, and tied it in with the Justice Society Computer in their Gotham City brownstone base using the Transmatter Cube to transmit signals between them. As she learned the truth, the Huntress succumbed to the exploding computer, sabotaged by Romaine's unwitting agent. 

Creating an invicible barrier around the Satellite to prevent any of them from escaping before finding Romaine, once he was revealed Roger used the Earth-Two Flash to help him escape. How? Through the same Transmatter Cube that the Society used to travel to the League's universe! Leaving using the same device, the Society recovered Flash on their native homeworld, although they were unable to locate Romaine.

Transmatter Team Travelling Tales: Across Space and Time

After a tale wherein the Justice League and Justice Society were recruited to aid Earth-S' Squadron of Justice on all three Earths, where the Cubes were unnecessary, the next meeting between these twin teams involved pursuing the sinister Psycho-Pirate across the Multiverse.

The Pirate had used undisclosed means to travel to Earth-One, where he created a secret base that would later be used by his allies in the Secret Society of Super-Villains in the hills outside of Metropolis. Having mentally controlled both Green Lantern and the Flash, which he used as paws against their teammates, the trio escaped the Justice Socity on Earth-Two to his mountainous retreat. Presumably using their own Transmatter Cube, the remaining  Justice Society members followed both Pirate and his pawns, capturing Psycho and helping Flash and the Lantern to recover their sanity.

Needing a way to return to Earth-Two, the Society transported to the League's satallite headquarters with their immobilized adversary. While not intending to stay for a prolonged visit, the Society were kept detained on the satellite when Leaguer Green Arrow disabled the Cube's controls, wanting his extra-dimensional pals stay for an inpromptu party. 

This event never ended up happening, as the sinister Mordru grabbed all the Leaguers present as well as all the Society there except for Wildcat and Star-Spangled Kid, who were left to tend to the Pirate until the twin teams returned.

While this tale ended in triumph, the next involving the Transmatter Cube would sadly end in tragedy...

Transmatter Team Travelling Tales: A Couple of Crazy Capers

Following their first use of the twin Transmatter Cubes, a few members of the Justice League presumably used it months afterwards to visit their Justice Society allies. At some point during their visit, the two teams were called upon to thwart a crime being committed by the Horned Owl Gang at York City Museum. After thwarting these costumed crooks, they followed the Sandman to his penthouse headquarters, in order to help him track down the mutated misunderstood menace of the Silicoid Man (formerly Sandy Hawkins).

While the Cube was not seen during this tale, it would stand to reason that the League used their device to transport to  the Earth-Two headquarters of the Society, via their own Cube. As to whether these heroes had opportunity to relax and enjoy one another's company before their encounter at the Musuem, or after they caught up with Sandy when he explained how he tried to prevent a massive earthquake, is not known. If they had, it was a melancholy gathering as they... and Sandman... learned of the tragedy behind Sandy's transformation and years long sleep in his silicon form.

Before these teams could plan another party together, they were once more brought together by a crisis, this time in the form of two displaced comicbook writers from Earth-Prime. One of these, Cary Bates, accidentally traveled to Earth-Two using the Flash's Cosmic Threadmill. The other writer, Elliot Maggin, then used the same means to journey to Earth-One to recover his coworker. In the League's Satellite headquarters, after appraising them of the situation, they together traveled to the Society's Earth... undoubtedly using the Cube once more. There the twin teams defeated the Injustice Society, who had been manipulating Bates, after which they returned home.

Transmatter Team Travelling Tales: The Beginning

Throughout the first ten crossovers between the Justice League and Justice Society, their tales involved facing various threats to their twin Earths... from supervillain gangs such as the Crime Champions to the Black Sphere Villains... to evil versions of theirs from alternate Earths like the Crime Syndiate and the Lawless League... to existential threats from the cosmos such as the Anti-Matter Man and Creator2. During these adventures, on occasion the heroes would visit each others headquarters, such as when the Society ventured to the League's headquarters in their first meeting to free their colleagues...  and when the League were summoned to the Society's headquarters to help combat parasitic life forms from another universe.

However, it was only during their eleventh meeting that the two teams intentionally planned to vist each other's headquarters for planned social events. Three Leaguers and three Socialites were sent via the newly developed Transmatter Devices to the other's world. However, the presence of the android Red Tornado... seeking to return to his homeworld Earth-Two after a brief existential exile to Earth-One, threw both devices off balance. As a result, seven heroes from these worlds were sent to a third in Earth-X, wherein they met and then joined forces with the Freedom Fighters. There, they helped the FF to extinguish the Nazi threat that conquered that planet. After this tale, the displaced heroes were able to contact their respective Earths, which modified the Transmatter Cubes to retrieve the four Leaguers and three Socialites. Persumably, the heroes carried on in their festivities with each other.

Nevertheless, this was just the start of several gatherings that the Justice teams would have in the years that followed, thanks in no small part to this revoluntary invention. While as before, only cosmic crisises at certain times of the year brought the groups together, now they could cement the bonds of friendship at any time, which they would do annually.

A Bridge Between Battalions: The Transmatter Technology

For several years, the Justice League of Earth-One and Justice Society of Earth-Two traveled to each other's world under special circumstances usually during a crisis of one type of another. While each Flash mastered the ability to bridge the gap that separated their two planes of existance, it proved difficult most times of the year. As their nutual friendship developed over time, the desire arose to develop the means to freely traverse the Multiverse  in order to meet regularly on more social terms.

Hence, the two groups jointly devised technology allowing each team to visit each other's planet on any occasion, not just for their annual gatherings but if special needs arose. Utilizing physics similar to the teleportation tubes the League also employed to transport its members from planetside to their orbiting satellite headquarters, on occasion the cubes were known to malfunction. In fact, the first time they were used, the android Red Tornado secretly snuck into the chamber while three of his new League allies were in mid-transport, exchanging places with three Socialites who were doing the same. Due to Tornado's desire to his native Earth-Two, his extra mass caused the three-on-three dimensional swap to be out of balance, leading to both teams being sent to Earth-X where the seven heroes assisted that world's Freedom Fighters.

Later, Professor Potter accidently activated the Transmatter Cube on board the JLA satellite while Earth-Two's Superman was travelling to Earth-One to enlist his counterpart's aid in saving the life of an elderly Jimmy Olsen. Instead, the beast-man known as Krogg was unleashed, leading to the Men of Steel merging their bodies into a "Phoenix of Steel". Shortly thereafter, despite the protests of Hawkman, Green Arrow and Black Canary used the device to travel back to the Pretty Bird's native Earth-Two, which caused a divergent Earth-One reality to form that a quintet of heroes had to restore to normal. And on yet another occasion, due to the machinations of Per Degaton, a divergent reality on Earth-Two was created due in part to the Cube's bringing the Crime Syndicate into the fray with their heroic dopplegangers.

Still, when not wrecking timelines and creating its own handy plot device, the Cubes were a useful gadget for the Greatest Heroes of Two Worlds!