Over the years the members of Justice Inc. had numerous adventures that took them to different times, parallel worlds, and distant galaxies. Some of the more significant incidents have been:
Seeking to rescue their leader Rip Hunter, who was trapped in prehistoric times, the Time Masters attempt to steal the Flash's Cosmis Treadmill, which was on loan to the Hall of Justice Super-Hero Museum in New York City. The Time Masters did not realize that the hero team Justice Inc. had their secret headquarters underneath the museum and team members Tarantula and Quiksilver intercept the would-be thieves. When the Time Masters explain what they are trying to do, the two heroes offer to help. Recruiting additional help from Rip's ally and time-traveler Booster Gold and Booster's Justice League teammate Blue Beetle the group prepare to use the Treadmill to go and rescue Rip. The four are joined by the hero Blue Devil, who had been making a public appearance at the Museum when the Time Masters had made their attempt to take the Cosmic Treadmill.
The group arrives in prehistoric times and with equipment they brought along, as well as the equipment Rip still had with him, are able to jury-rig a working time travel device. The device is not perfect, however, and is not able to get them back to the present directly. The first use of the device brings them to Ancient Atlantis, where the sorceror Arion is able to help them continue on their journey. The next leg brings them to Ancient Egypt where the group joined forces with the sorcerer Nabu, the avatar of the Egyptian god Anubis and the dragon spirit Ki to battle the evil magician Kheth-Amon and his allies, including Black Adam. In the course of the battle Quiksilver's back was broken by Black Adam. His life was saved by Nabu, but not before Kheth-Amon secretly attached a portion of his own soul to Quiksilver's as a means to escape Nabu. After Kheth-Amon was defeated, the group continued on in their attempts to return to the present.
After using the device to leave Egypt the group arrived in North America during the Revolutionary War. There they encountered the hero Tomahawk as well as Rip's cousin Dan Hunter, who had chosen to stay in that period after falling in love with a woman. The group also encountered the first incarnation of Uncle Sam before making their next jump. The group next arrived in the 1890s where they encountered several of the noted Wild West figures of the time including Jonah Hex, Bat Lash, and Max Mercury in his earlier identity as Whip Whirlwind. Again the group were able to repower their device and make another jump closer to the present. Arriving in the early 20th Century the group were in Europe during the First World War. There they teamed up with a hero named Crusader to battle the immortal Vandal Savage before making their next jump.
The next stop was in Europe 1940, prior to America's entry into World War II. The heroes encounter wartime hero Commander Steel, who had been sent behind German lines on covert missions. The presence of the time travelers creates a small but significant divergence, one that will impact the rest of their journey. In the original timeline Commander Steel is able to kill superhuman Nazi agent Otto Frentz, codename Parsifal; but due to the interference of the time travelers the mission is aborted and Steel goes after a secondary target instead, eliminating Nazi biogeneticist Dr. Klaus Schimmel. While the events of World War II are largely unaffected by the change, the course of events for the members of the All-Star Squadron and the Nazi regime's superhuman forces is drastically altered. Without Schimmel the Reich does not gain some of its most powerful operatives like Baron Blitzkrieg, Zyklon, and many of the superhuman members of Axis Amerika. However, with Parsifal still alive the Axis forces retain a powerful deterrent against the Allied superhumans - Parsifal's power is the ability to negate the powers of another superhuman. After a disastrous first encounter with Parsifal-backed Axis forces in the Pacific nearly results in the death of several members of the All-Star Squadron, President Roosevelt orders all Allied superhumans out of the active war zones knowing that the loss of even one Mystery Man could be a devastating blow to morale. (In the regular timeline it was a magical barrier conjured by Axis agent the Dragon King that kept some of the most powerful members of the All-Star Squadron out of the war, and led Roosevelt to make a similar decree to keep all Mystery Men out of the fight.)
The long term consequences of this change become apparent when the time travelers emerge from their next jump, arriving in Washington D.C. in 1949. They appear in the middle of a melee as a superhuman named Dyna-Man takes on the collected Mystery Men and Women of the United States. Tarantula, knowledgable in this era's superhumans, is puzzled as he has no knowledge of this Dyna-Man or the events unfolding in front of them. Before he can try and learn more Tarantula is horrified his grandfather, the original Tarantula, engage Dyna-Man only to have his neck snapped. Rip Hunter realizes that things have gone wrong and initiates another time jump to try and get the group to the present.
Arriving in the present time at first things appear normal as the group materializes in front of the Hall of Justice Museum, but it soon becomes apparent that thigs have gone wrong. Almost immediately several of the group start to experience dangerous phenomena. Booster Gold, who was trapped in his armor relying on it for life support is suddenly in excruciating pain; Blue Beetle rushes to help only to discover that Booster's life threatening injuries are gone and the life support cybernetics are now causing him harm. Beetle assists Booster in removing the armor while Blue Devil, who had been fused to his own costume by demonic magic, discovered that he was now able to remove the suit. On top of all this, Tarantula was beginning to disappear, fading away from existence due to the fact that in this timeline his grandfather had died before even getting married and therefore Tarantula's father (and himself) had never been born. Tarantula was saved by the timely arrival of the Flash, who was able to adjust Tarantula's vibrational rate to attune him to the new timeline before he vanished completely. Shockingly the group realize that this Flash is Barry Allen, who in the normal timeline had been killed in the Crisis several years earlier. The group slowly learned more about this alternate timeline, and battled alongside its heroes against a world-spanning threat that was partially caused by the group's presence. For more on this alternate timeline see the entry for the Elseworld.
After the threat had ended, the group were able to return to their proper timeline with the help of Waverider and the Linear Men. Rip was again left stranded in the past, and his future self (a member of the Linear Men) told the group they weren't destined to rescue him.
Over the span of several weeks alternate versions of the hero Tarantula begin appearing in New York City. These Tarantulas are all from a point in the near future where all have experienced the destruction of New York City in an explosion they all claim was caused by a member of their own team. To prevent the disaster these Tarantulas have come back to kill the teammate responsible before they can cause the explosion. Most of these alternate Tarantulas were initially unaware that they had traveled to a present New York that was not their own until they were confronted by this timeline's Justice Inc. or had time to begin to notice the discrepancies.
The initial incursions occured at the same time as Overlord's attempted invasion of New York, so the city's heroes were not aware of what else was happening. After Overlord's defeat, Justice Inc. and their allies were able to realize something was going on, and were able to determine that the influx of alternate Tarantulas was a plot by the temporal villain Extant, who intended the convergence of so many alternate versions of one person in the same place to cause a space-time explosion he could harness the power from. Due to the paradoxical nature of the scheme, this space-time explosion is what would destroy New York City in the near future time periods of the alternate Tarantulas, the very incident that prompted them to attempt to travel back in time to prevent.
Justice Inc. and their allies scambled to prevent the time-space explosion and thwart Extant. This involved building a crude time machine in the form of a Time Gate and traveling to different periods to stop the build-up of the time wave that would trigger the detonation. The effort was successful, in that the explosion was prevented, but there were still ramifications. The effort to stop the wave in the late 1800s left a major chronal disturbance that reached from the early 1700s to the end of the 21st Century, which would be the root cause of many temporal inconsistencies and paradoxes during that time span. There were additional effects as well: firstly, a surge in temporal energy sent the hero Galahad spiraling through the timestream; and secondly, the disruption of the Time Gate in the 27th Century resulted in Michael Bennett being split across multiple time periods. Bennett was the CEO of Global Industries and was in charge of the New Conglomerate and had offered their help as well as the resources of his corporation during the crisis.
After Extant's plot was thwarted the alternate Tarantulas were for the most part automatically returned to their proper realities. The alternate Tarantulas that were identified include:
Before the explosion was prevented, Tarantulas from more radical alternate realities began to appear:
In addition to these alternate versions of Tarantula from the near future, a Tarantula from nearly two decades in the future also appeared in New York City during these events. It is unknown if his arrival at this time was as a result of an effect of Extant's plot or just a coincidence. This Tarantula would soon adopt the identity of Death Spider.
During a confrontation with Kei Manga Corporation, the members of Justice Inc. were pulled into an interdimensional vortex. The vortex dropped them into parallel Earths where history had taken a different route and the familiar had taken on strange new forms. The team were forced to journey through several such parallel worlds before finally returning home.
