Young Demons and Dragons
Disclaimer: I don't own HP or Teen Titans.
'Thoughts'
Many knew about Raven, the dark teen titan. They knew about Harry Potter, the boy-who-lived. What only a few knew was that Raven and Harry were sister and brother. Raven was his older sister.
Raven had been created so that Trigon, their demon of a father, could come to Earth and take it over. Her mother had been in a cult when she was in her early twenties. They had done a ritual and then slept with the man that appeared from the black smoak. That was when she became pregnant with Raven. She fled to Azareth in hopes to save herself and her baby.
Harry was born two years later. Only James and Lily knew that James had given birth and not Lily. James was the only one to know who the other parent was. Lily thought that the father was Loki, god of mischief. In truth the father was Trigon destroyer of worlds.
James hadn't meant to summon Trigon. He has tried to summon Loki but had messed it up and summoned the demon instead. Trigon knew that he didn't have enough power to take over but he had enough to stay long enough to impregnate the male wizard.
Trigon knew that if he had a child with this wizard the baby would be powerful. He could sense the dragon within the wizard. The baby would be a wizard/demon/dragon hybrid. He would be the perfect tool to help his gem to become the portal. The choice was made and soon James Potter became pregnant.
During sex Trigon changed into his real form. James knew in that moment who the other was. He tried to stop but Trigon only laughed and continued. When he found out he was pregnant he prayed to Merlin that his baby would be okay. He performed many rituals to prevent Trigon from getting his baby boy.
He gave birth to a healthy baby boy. He had black hair that turned white at the bottom. His eyes were an emerald green which came from the Prince family on his mum's side. He was very pale. A year later James died protecting his son.
Harry was sent to live with an abusive family. They were related to his stepmom. He stayed until he was four then his demonic father took control of his body. Raven and him had a mental connection. It had allowed them to talk until their father took control.