She hadn't expected the masked man to live much less ask her to join his team. Really, she thought his offer was to become one of his henchmen, and it didn't sound like she had a choice. That's how she found herself in the employment of Zoom, the deadly speedster metahuman who was terrorizing Central City.

Part of her wanted to flee, to help the people who were now becoming her victims by association with him. The other part of her sneered at the thought, why should they all get to be happy when her soulmate, her Ollie, was brutally ripped from her life?

Zoom decided that his new hench-woman needed a villainous new name. It didn't take her long to pick one out, and so she was dubbed Black Siren.

Soon she met Killer Frost and her husband Deathstorm, and you know what they say, opposites attract. Killer Frost had icy powers while Deathstorm power was fire. She had to admit, she was jealous of her new friends. Even after becoming meta's they were still perfect for each other, still soulmates, a bonded pair. Watching them still find happiness with each other while following Zoom's orders made her wish even more desperately that she still had Ollie here with her.

When Reverb told her that Zoom was holding his soulmate hostage, one of the reasons he'd pulled Killer Frost and Deathstorm into this mess with him, it made her wish seem ridiculous. Why would she want her Ollie here when he couldn't fight, likely wouldn't have been a meta, and would never have gone along with these "missions"? His life would be threatened, and she knew she would do anything to protect him if he were here, and that meant doing things that he would never forgive her for.

After months of working with her newfound friends, the first she'd made in so long, a new speedster arrived. The Flash from Earth-1. As instructed, Killer Frost, Deathstorm, and Reverb went after him. When Killer Frost returned to their apartments that night she looked lost, and colder than usual. What really stood out was the fact that she was alone. No Reverb cracking jokes behind her. No Deathstorm holding her close. Just Killer Frost, and she looked like she was in pain.

When Killer Frost collapsed into her arms, it was the first time she'd ever seen the seemingly cold girl cry. Black Siren held tight to her friend, knowing exactly how it felt to lose one's soulmate and that she could do nothing to help her now.