
Among the greatest criminal minds to attempt to bend time and space were the Lord of Time and Light, each of whom gathered vast forces from future eras to conquer the 20th century and other historical eras. As greedy geniuses these temporal tyrants tried various strategies to defeat their foes. The Time Lord persisted in his agenda against the Justice League as had Light versus the Justice Socialite known as Starman. Yet while it could be said that time was on their side, they failed to count the precious seconds between sweeping victory and bitter defeat, despite gains they each obtained time-to-time.

While the manner in which The Lord of Time obtained his time traveling technology was never revealed, except that he was from the year 3786* when presumably such equipment was readily available, he nevertheless showed adept skill at the intricacies in the flow of the fourth dimension. At a certain point, the warlord known as Epoch would even improve upon this science with his Eternity Brain, which was the mechanism through which he believed he would finally vanquish the Justice League who beat him twice before, although the League and Society actually saved him and reality from its evil program.

Some of Time Lord's tales would be mirrored on Earth-Two by Per Degaton, the cosmic twin of the Legion of Super-Heroes member known as Brainiac Five, another time traveler occasionally prone to periods of madness. However, the actual doppleganger to the Lord of Time was a different man who only bent the future to his will once... the Light!
The Light was a brilliant scientist of the 20th century who had discovered shrinking technology and later engineered a massive submarine headquarters for his League of the Octopus. Each time, however, Starman stymied the Light's goals so that in his next power grab, the Light decided to "borrow" a fellow scientist's revolutary discovery.
As "the Unknown", the Light stole time traveling technology from Professor Junper Grimm. This time machine allowed the Light and his minions to travel through time 2000 years into the future wherein he obtained an electro-cannon and Futurites which were giants of that far flung future. Still, Starman bested the time lord once more.
There were other temporal terrors unleashed upon the 20th century from the time stream. These included Neverwas whom the Justice League had to contain and return to its prehistoric native era, and its counterpart which tormented Earth-Two's Wonder Woman and her Holliday Girls allies when they faced criminal air pirates through several historic periods in time.
Despite this, there were a few benevolent champions of time, such as Rip Hunter and his Forgotten Heroes on Earth-One and Rip Carter and his Boy Commandos who visited a variety of memoral past events in history. There was the Time Institute in the 30th century that bridged the gap to the 20th century of Earth-One, and the Time Trust of the 20th century that conversely bridged the gap to the 30th century of Earth-Two. Through these organizations, members of the Justice League and Justice Society from present day as well as the Legion of Super-Heroes and the Space Legion from a thousand years in the future all benefited from their research.
There were two other time traveling tyrants who tormented our twin teams in Xotar** of 11,960 AD and Landor of the 25th century. Xotar battled the Justice League early in their existence, while Landor*** quarreled with the Justice Society****.
* A future post will discuss the probable first appearance of the Lord of Time, versus the Flash, as well as a probable encounter the Light had with one of Starman’s Justice Society teammates in the future.
** The Xotar of Earth-Two was a benevolent researcher who remained in 11,960 rather than be tempted by the equivalent of ancient technology he discovered, which was life-like paint from prehistoric Atlantis. Instead, another time-traveling menace named Landor of the 25th century had a similar battle with the Justice Society as had Xotar with the Justice League.
*** Landor's counterpart on Earth-One was the good-natured yet greedyBooster Gold who likewise traveled from the 25th century in an attempt to exploit the 20th century with future gadgets.
**** Interestingly from a "Earth-Prime" publishing perspective, Xotar debuted in Brave and the Bold #29, while Landor appeared in All-Star Comics #29!