The time Lord used time travel to commit crimes in ages other than his own. In the 20th Century, he brought minnions from the past and future to do his bidding for him by commiting crimes on his behalf. This brought the Justice League into battle with his minnions, but even as they did so, Felix Faust used his arcane sorcery to spirit them away.

After defeating Faust, the JLA returned to track down the Lord of Time only to see im vanish in time. However, Superman noticed the setting onhis wristwatch and so he was able to take his fellow JLAers to the year 3768 to capture the villain in his lair.

Though delayed by three demons in the 21st century, the heroes finally returned the Lord of Time to the 20th Century to stand trial on Earth. Using his futuristic science, the Lord of time escaped and has battled the JLA on several subsequent occasions.

Indeed it was the Lord of time who engineered what was to be the most crushing and total defeat of both the JLA and the JSA. In his timeless lair, he had constructed the Eternity Brain, a computer that could actually control time. With it, he planned to stop the flow of time temporarily for criminal purposes. Then he discovered that, once stopped, the time flow could never be started again, and the computer, once programmed, could not be halted.

So he arranged to bring heroes from the past; Black Pirate, Enemy Ace, Jonah Hex, Viking Prince and Miss Liberty, and endow them with poaers that would enable them to deal a crushing defeat to both the JLA and JSA at their annual reunion. Then he would lure the heroes to his own lair, hoping that their defeat would make them stronger - strong enough to overcome the Eternity Brain and save the entire time-space continuum. It worked, and although only the Elongated Man reached the brain, he was able to use his own plastic body to short-circuit it. Despite his capture, the Time Lord was for once happy that his original scheme had failed - and that his plan to stop it had succeeded.

This may have led to his eventual reformation. He went to the far future and cloned a family of six sons and one daughter. When they grew to adulthood, the sons revolted against their father. With the aid of the 20th Century hero Steel, the Lord of Time regained his chrono-cube, which his sons had stolen, and went back in time to prevent thier creation.