Cassie Quick

Cassie Teresa Quick is a female speed demon and ally of Marcus Allen and the rest of the Legends. The daughter of scientist David Quick and Teresa Quick, Cassie is gifted in the field of science but pursues a career in music. In a lab accident, Cassie was struck by lightning and affected by Kane's rupture wave similar to Marcus. However, it took until 2018 for her powers to activate and approached the Legends. After receiving training by Professor Grayson and Marcus, Cassie adopted the name Quicksilver and helped Marcus with Ryan Harper before leaving West City with her parents and establishing herself in another city. She later helped during Sebastian Harper's raid on the Brotherhood's hideout.