Raven first appeared in DC Comics Presents #26 (October 1980), she was created by Marv Wolfman and George Pérez. Raven is an empath who can teleport and control her mystical "Soul Self", which can fight physically and serve as Raven's eyes and ears away from her body.
She is the half-breed daughter of a human woman named Arella and the inter-dimensional demon known as Trigon. Raven was raised in an alternate dimension called Azarath, occupied by pacifistic inhabitants whose spiritual leader was the mystic Azar. In Azarath, she was taught to "control her emotions" by Azar, in order to suppress her naturally inherited demonic powers, otherwise Trigon would recreate her in his own image.
During her youth, Raven rarely saw her mother and grew detached from her. Upon Azar's death, Arella began the task of raising and teaching Raven. Around this time, Raven's demonic heritage was revealed, as she met her father face to face for the first time. Soon after her 16th birthday, Raven learned that Trigon planned to come to her dimension, and she vowed to stop him.
Raven initially approached the Justice League, but after they refused her on the advice of Zatanna (who sensed her true demonic parentage), in desperation, she reformed the original Teen Titans as The New Teen Titans in order to fight against her father. The team that she recruited consisted of Robin, Wonder Girl, Kid Flash, Starfire, Cyborg, and Changeling.
Trigon eventually kidnapped Raven to his home dimension. The Titans followed the demon, defeated Trigon and sealed him in an inter-dimensional prison with the help of Arella (who remained at the inter-dimensional doorway to act as Trigon's guardian). However, Raven continued to fight against her father's corrupting influence as he wasn't completely destroyed. For a period of time, Raven lost control in high-stress situations, but managed to regain control before Trigon could assert himself.