Kronos

Kronos was the son of the Chronovore, Prometheus, and Electra, an Eternal. He was responsible for the destruction of Atlantis. He described himself as "beyond good and evil".

Even though a union between a Chronovore and an Eternal was forbidden by the Ancient Covenant, his parents had him nevertheless. (PDA: The Quantum Archangel)

During the late 20th century, the Master used a crystal named after Kronos to cause him to manifest so that (he thought) he might bind Kronos to his will. The Master failed, and, returned back in time to the later days of Atlantis, Kronos ruined the city. (DW: The Time Monster)