At some time, Dr. Gero had transformed [Juuhachigou's real name here] and her brother into cyborgs. These two were of Gero's ultimate design, with an everlsting energy source. Therefore, they could push themselves to limits far beyond normal humans (and older models) because of their cybernetic enhanced bodies, could continue going at their limits forever (kinda like a car that can sustain driving while red lined), and can live forever. Gero programmed the two to kill his enemy that destroyed his life: Son Gokou.

She and her brother were given new numeric names and had no recollections of their past life. Juuhachigou (18-Gou) and Juunanagou (17-Gou), however, still had the ability of free will and reasoning. They soon went against Gero, however, he deactivated them for further development.

Nijugou (20-Gou, Gero's human body became too old and had his brain transplaneted into a new jinzonigen body.) reactivated the brother and sister after realizing that the Z Senshi was just too powerful for him. However, they still had their free will and pretended to do what they were told until they had a moment to strike back at the man who had ruined their lives.

Juunanagou decapitated Nijugou and then smashed his head. His body was destroyed along with his lab.

The two still had enmity against the Z Senshi and fought with them. Even two Super Saiyajins were not enough for their power. They eventually gave up and headed off to find Gokou, but not until after Juuhachigou kissed a certain bald monk. Not long after, they met up with Cell. Cell eventually absorbed Juuhachigou and her brother.

Later SSJ2 Gohan beat the crap out of Perfect Cell, making him 'eject' Juuhachigou. Kuririn later wished the self-destruct unit inside of her to be cease functioning using the new dragon balls. Juuhachigou was not exactly sure how to react to something like this and fled.

After the 7 year intermission, we see that Kuririn had eventually met up with Juuchigou and they married and had a daughter: Marron (Named after Kuririn's ex-girlfriend, tsk tsk.)

Although Juuhachigou was built to be a killing machine, she settled down and is a loving wife and mother. She no longer fights, unless in a tournament, and instead spends her time shopping. Typical.

In Mirai Trunks' timeline, Juuhachigou did not settle down with Kuririn, rather, she killed him effortlessly. Along with the rest of the Z Senshi and the planet. She and her brother were later destoryed easily when Mirai Trunks returned home in the end of the Cell Saga.

In DBGT, she continues to be a wife and mother. She no longer shops alone, her daughter retains her mother's fashion sense. I never knew that was hereditary... In the Super Juunanagou saga she gets killed. <sniff>