Trigon is a fictional demon, a comic book character published by DC Comics. Trigon first appeared in New Teen Titans #2 (February 1981) and was created by Marv Wolfman and George Pérez.
A sadistic, cruel and powerful demon of interdimensional origin, Trigon is result of the mating between a female member of a mystic sect and the god they worshiped. A side effect of this pairing, is that their child was filled with the cast-off evil energies of the inhabitants of Azarath, forming him into their personification. At birth, Trigon killed everyone around him (including his own mother). At the age of six, he destroyed an entire planet. And by the age of thirty, he held dominion over millions of worlds in his dimension. Arella, Raven's mother, was a depressed woman who decided to join a Satanic cult known as Church of Blood, that was trying to kill Trigon. When the ritual was performed, Trigon, disguised as a handsome male, emerged and married Arella, who, soon impregnated by Trigon, discovered Trigon's true nature. Trigon leaves Arella, who on the brink of suicide is found by an extra-dimensional cult and brought her to Azarath, where she gives birth to a daughter, Raven. Raven is brought up to "control her emotions" in order to suppress and control the demonic powers she inherited from Trigon.
Raven learned of Trigon's intentions to conquer the Earth, and vowed to stop him; she initially approached the Justice League, but they refused her on the advice of Zatanna who sensed her demonic parentage. In desperation, she reformed the Teen Titans with several new members in order to fight her father. The team was eventually able to defeat Trigon and seal him in an interdimensional prison. However, Raven still had to fight her father's influence, as he was not completely destroyed. Trigon eventually escaped and came to Earth, taking control of Raven and destroying Azarath in the process. The Titans came together and tried to fight Trigon, but were contaminated by his demonic influence and killed Raven; this allowed the souls of Azarath to possess her and use her as a channel to kill Trigon- the demonic possession had been part of a plan to defeat Trigon, as the Titans would never have killed Raven on their own-, blasting him out of existence with a beam of purifying light. Although Trigon is gone, his followers (led by Brother Blood) have tried to revive him several times.
In Titans vol. 2, #1, Raven states that Trigon has returned and is responsible for the recent attacks on past and present members of the Teen Titans. The cause of his resurrection from the dead, has not been revealed. It is revealed in #3 that attacks by rival demons have spread Trigon's forces too thinly, and left him desperately weak, which forces him to renew his attack on our dimension, in hopes of creating a new power base.
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