Kelli and her twin sister Jacklyn both worked as managers of a small bakery in Tokyo, with the only employee below them during their shift being Sarah Peterson. Both the twins are vile and viscious, the epitome of snobbery. However, their perspective changed slightly once Rubius took a job at their bakery. He kidnapped all three and turned them into henchgirls of the Negamoon.

Kelli Brewer became Deathwish, the second to be transformed, with many powers not exactly defined and concrete. Most, however, seem to have a theme of pain and suffering. She also has the power to heal herself, quickly removing any injury. Like most girls of the Negaverse and Megamoon, she gets into petty arguments over who is the best-looking, especially with her twin sister, Insectica. Even though she was unwillingly captured and transformed, she seems to enjoy this life of evil even more than her previous life.