One of the normal students at Hope's Peak High, Marissa Scholders is a bullied girl. She is known to be shy, timid, nerdy, a geek, intelligent, talented, smart, a bookworm, and socially awkward. Wherever Marissa goes, she is never safe nor comforted. Her parents don't love her because of her lifestyle and focuses more on their older daughter, who is a pageant winner who wins flawlessly. She gets bullied by other students at school and gets mocked, laughed at, and tormented whenever she presents a project for everyone to see. One day, however, made Marissa snap for good when three of her biggest bullies decided to post a prank that costed her project to become broken and getting mocked, laughed at, tormented, and humiliated. Late at night, she decides to do Otto Octavius's solution: equip the arms upon her back. From then on, she thus became known as Scylla. Though she managed to kill three of the girls, only Leda Davidson, an airheaded girl and former friend of the three girls, managed to survive thanks to Chi intervening. Marissa vowed revenge towards Chi for stopping what she calls "One of the greatest masterpieces known to man", despite the creation she made having the slightest tension to take hundreds of lives.