A former martial art trainer of Lex Luthor during the time when he posed as his own heir, Sasha Green was killed by her employer for having humiliated him in public. Lois Lane revealed Lex's involvement by making public a security camera tape of the murder, destroying the carefully-crafted reputation of Lex Luthor the Second.
Dumped in a landfill by Lexcorp employees, the body of Sasha Green was infected Gemir, who fed on her spinal fluids. As a result, Sasha Green became Myriad, a meta-human (and post-mortem!) entity able to model her features and personality after the people she approached. Her reappearance in Metropolis alerted Lex, who had her brought by Jillian Simmons, one of his personal assassins, to terminate her and delete all traces of Lexcorp's involvement. In the chopper that drove her to her fate, Sasha/Myriad identified herself with her killer and absorbed her psyche, skills and memories, effectively inversing the roles and executing Lex's orders by killing the woman she believed to be her contract. Like the other "New Bloods" she took part in the attack against the Taker. She teamed up with the Hitman Tommy Monhagan and even managed to spook the ice-cold hitman. Her final fate remains a mystery.