The people were unhappy with his rule, particularly a scientist named Matthew Ryder, an expert on temporal studies, who was convinced he could use his technology to travel back in time and prevent the maniacal ruler from ever coming to power.

As he travelled through the rift, his body mutated into a form of living temporal energy, and upon arriving at his destination, he took the name Waverider.

[2] After several attempts, he began to rethink his approach, but Waverider accidentally came in physical contact with Captain Atom, unleashing a storm of temporal energy that opened a gate to the future through which Monarch emerged.

Monarch, it seems, had been monitoring Waverider's every move in the past ever since he left the future and merely waited for the perfect time to travel back and stop him from erasing his existence.

In Hawk and Dove Annual #2, Waverider looked into Hank Hall's future to see him fight and die at the hands of Monarch in 2001.

Eventually, the Justice League found him, and Captain Atom, feeling guilty he let Monarch slip through the timestream in the first place, decided to fight him one-on-one.

The battle caused Atom's energy and Monarch's suit to clash, creating a portal that sent both of them back in time to the Age of Dinosaurs.

When hostile aliens encounter Monarch and Atom in the past (sometime between 230 and 65 million years ago), they attempted to enlist both (without either's knowledge) to assist them in creating a wormhole.

Captain Atom next causes an explosion on the primitive Earth, which propels both him and the trigger forward in time to Emperor Nero (A.D. 54-68) era Rome.

He then took control of Hawk and used him to impregnate Dove so she would give birth to a child that would inherit all the powers of the Lords of Chaos and Order.

Much later, while searching for his wife Lyta, Hector would discover Dove and bring her out of Mordru's spell, revealing the truth of these events.

It borrows the idea of a hero becoming a villain in the future, in the show's case Barry Allen, and a figure traveling back in time to prevent it, Despero filling the role occupied by Waverider in the original story.