Trigon arrived at Titans Tower by travelling through an interdimensional portal. He knocked the Tower's walls and began to recite his professions and titles until he was interrupted by Raven. Shrinking into a size suitable for the Tower's rooms, he quickly introduced himself by flattering the other Titans. Raven demanded to know the reason for his visit, but quickly bid him farewell before entering her room. Hurt, Trigon followed her through a portal of his own as the other Titans sympathized with the demonic conqueror. Upon entering Raven's room, Trigon attempted to tidy her books and shed light but Raven quickly undid Trigon's work.
Trigon revealed his plans to take the Titans to eat pizza, but Raven refused as she knew that Trigon's reason for visiting the Tower was to get her to become fully demonic. He attempted to persuade her, but Raven rebuffed her birthright by claiming she didn't ask to be his daughter. Saddened by the outburst, Trigon exited the room and sat on the couch with the other Titans. He asked them who wouldn't like a father who can grant power entrancing them. In order to convince Raven to embrace her destiny, Trigon granted Beast Boy the ability to shift into any object and Starfire the power to speak like an Earth teenager. He also gave Cyborg a dog head for a hand and made Robin extremely muscular while giving Silkie a pair of wings.
While flying a kite on top of the Tower, Raven, having grown frustrated by her friends' acceptance of Trigon, informed him of her decision to oblige to his wishes. Trigon instructed her on the path to become truly demonic until he revealed that this would mean the death of her friends, shocking the Titans who realized that Raven was right about Trigon. Angered by her trick, Trigon transformed into his demonic form and was attacked by Robin, Beast Boy, and Cyborg. However, Raven shrunk Trigon in size and cast him into an interdimensional portal, but suspects that he'll return for Thanksgiving.
Raven mentions Trigon when telling Robin that she's friendless due to being the daughter of the intergalactic demon.
In a plausible future created by Beast Boy and Cyborg, Trigon was defeated by Raven and she gained the powers of a celestial goddess.
Raven sings in the shower that her dad is bad referring to Trigon. Later, a cloak bound Cyborg informs Beast Boy that he's finishing Trigon's dark work.
In her dream, Raven envisioned Trigon offering her an ultimatum: accept her birthright or witness the death of her friends. Raven, however, manages to destroy Trigon, but, in turn, kills her friends and conquerors Earth.
After Raven neglects giving him a gift for Father's Day, Trigon returns to Earth with the intention of destroying it. He transports Robin, Beast Boy, and Cyborg to the center of the Earth and shoots fireballs at Jump City until Starfire gives him a hand-drawn drawing of him and Trigon. Touched by the gesture, he stops his attack on Earth and promptly disembarks. Later, he returns to the Tower and gives Starfire a kitten for being nice to him, but Raven promptly shoos him away. Starfire finds him on a rock outside the Tower and invites him for a Silly Dance Party which he promptly agrees to. As Starfire and Trigon spend more time together, Raven begins feeling jealous and eventually attacks Starfire out of spite. However, the two realize that Trigon had toyed with their emotions in another plot to get Raven to accept to her birthright. The two manage to transport Trigon into another portal, but he promises to see them at Thanksgiving.
During a girl's only sleep over, Raven, Starfire, Bumblebee, and Jinx participated in a game of MASH with Starfire being predicted to marry Trigon. As the game was written on a page of Raven's spell book, it summoned Trigon and he arrived to collect his bride. An eavesdropping Robin, however, attempted to confront Trigon, but the two were thrown out of the Tower for violating the girl's number one rule: No boys allowed. In turn, Trigon and Robin joined Beast Boy and Cyborg at a bowling alley where Trigon praised Cyborg on another strike before asking if he was cheating through his robotic technology which the Titan nervously denied.
When Trigon arrived to visit Raven, he granted Starfire the ability to speak as an Earth teenager in order to gain her support and help him convince Raven into accepting her birthright. She did not participate in the fight against him. When Raven refused to get him anything for Father's Day, Starfire managed to stop his assault on Jump City by being nice to him. In turn, he expressed his gratitude by giving her a kitten and the two soon participated in a Silly Dance Party. Starfire admitted to Trigon that she longed for a father-daughter relationship and the two began bonding, causing Raven to become jealous. However, the two later discover that Trigon had purposefully toyed with their emotions, meaning that his bond with Starfire was simply a ruse to get Raven to accept her birthright. During a girl's only sleep over, Trigon readily accepted to marry Starfire after a game of MASH predicted that she would, but he was stopped by Raven.