A being as old as the Multiverse itself, the Monitor watches the events of each Earth as they unfold from afar, outside the human concept of space and time.
The living embodiment of evil itself, Trigon has tried numerous times to conquer reality, but has been thwarted by his daughter Raven and the Teen Titans.
Born from the unholy union between evil cast out of human souls and the mystical energy of the realm of Azarath, Trigon is the physical manifestation of the darkness that lurks in the worst parts of humanity. A tyrant and a monster, Trigon rules over hundreds of worlds from his home in Azarath, but is always looking for more to conquer.
A destroyer of universes, the Anti-Monitor caused the Crisis on Infinite Earths and was reborn after Flashpoint, becoming guardian of the Sinestro Corps.