13 parts Complete Set in season 3 after being revived, Hekapoo thought about the possibility of what would happen if anything like what had happened in the battle of Mewni was to happen again. She thought of a contingency plan to insure that if she died there would be someone to carry on her work and legacy. Her idea was an apprentice. At first she considers Marco due to him actually surviving the neverzone and his willingness to never give up. He was a perfect candidate however while spying on Marco she watches him and Jackie's break up which gives Hekapoo the idea that his ex-girlfriend would be the perfect person to be her heir. Unfortunately the young Jackie doesn't want to be her heir willingly, so Hekapoo forces upon her to transform into a half magic demon like her.