In the underworld, Mordred fell in love with a demon and had a son with her. He taught his son magic, and once Mordred's son grew up, he was able to break his father out of the underworld. As they roamed the mortal realm, they formed a team of 4 people who they turned into demons with the green flame, one of their deadly creations. Wanted to get revenge for his father, Mordred's son found the Royal family, who were descendants of the witch who cursed his dad. He tried to bargain with them, saying that if they lifted the curse, they would leave the Royals and their subjects alone. Queen Luna declined, which was a grave mistake.
