I'm Viper— real name, Yue Cain. 19. Half-Chinese. White hair with dark roots, undercut. Green eyes. Deadpan face, rarely show emotion. Green ninja armor... But in free time I steal Cassandra and Stephanie's clothes. They are too big... but soft. Nice. I'm mute, illiterate: can only use sign language. I can read bodies, predict moves. Born as a backup weapon for David Cain. Sharper than Cass, but... Empty inside. Bruce adopted me. I'm strong, fast, dummy, naïve and cling to my sister, Cassandra. 