The alter-ego of esteemed nuclear physicist Dr Jane Blaisedale, Blaise was a criminal associate of Firefly, aka Garfield Lynns, starting a romantic relationship with the famed arsonist and corporate saboteur.
After her research project on boosting nuclear power at Gotham U was shut down over safety concerns, she turned to a life of crime, partnering with her boyfriend to help amass enough wealth to leave Gotham City behind forever.
Putting her knowledge to good use, Blaise designed several upgrades that would help enhance and improve his operations, dubbing the project, Firefly 2.0. Among the items they stole was a highly volatile experimental isotope she had been researching back at her old lab in Gotham U.
This isotope would spell disaster for the couple, destroying their safehouse and irradiating Lynns with so much nuclear radiation that it heavily mutated his body; transforming him into Phosphorus.
Watching his violent and extreme descent into madness, she became disillusioned by his lack of control and willingness to use his powers to inflict pain and suffering on others. She attempted to get Phosphorus help, but his abusive behaviour pushed her away.
Ultimately, Blaise turned against her lover, assisting Batman, Batgirl and Robin in his defeat and stopping Lynns from causing a catastrophic meltdown that would decimate Gotham.
Horrified by her experiences, she chose to end their relationship and cut all ties with him, letting him know that any spark they had once shared was thoroughly gone.
