I will continue to test my abilities to the limits, to see what heights I can reach, as well as look over my beautiful children and grandchildren.

Weapon X was the last Weapon in the series - and labeled the Ultimate Weapon. Having the complete abilites of the previous nine weapons, X was sent to defeat Weapon II, Dias, and Weapon IX, Spirit. Nearly succeeding, X was defeated by the combined abilities of the entire team, brought down and captured. Eventually she entered a pact with the Inugami Lilith for another shot at Dias, but was once again defeated. Since then she has agreed to hold off killing Dias as he teaches her everything there is about he world first. This eventually led to X's killing sense dulling and becoming more relaxed over time.

Eventually, X joined the team after they needed her abilities. She agreed to help them for the money and the chance to get closer to Dias. During her battles, it was revealed she was cloned from the destroyed body of Weapon VII, Caesura. While Caesura was eventually brought back, the revelation didn't slow X down for long, though. Currently she's become an offical member of the team. However, only time will tell when she demands a rematch with Dias for his life.

Travelling through the multiverse has brought about changes in X's life. She's forged a bond with the mysterious Tsukiyomi, an artifically created goddess from another world, while her friendship with Lilith has grown stronger. Her rivalry with Dias has blossomed into love, as she began to date him and seeks just as strongly to protect him as she does to one day defeat him.

However, after the reality missions, things began to fall apart, as X was kidnapped after Dias accidently got her pregnant. Despite stating she didn't want the child to him when they were brief reunited, he ignored her and forever damaged their relationship. Too far along to abort, the child was born and the boy was not wanted by X. Dias tried to raise him but ignored all help from others and the boy was eventually taken.

This led to many trials and tribulations after Dias was temporarily out of the picture, with X putting Kaleb up for adoption, a move she would always regret for the rest of her life. When Del Giblin begin to slowly, over many years, warm X's heart and married her, bringing her over time to the idea of children, she lost Kaleb forever to a project to use against the Dragoons. She was forced to give him to Dias to take out to deep space to train with his father.

Perhaps this act is what made X finally decide to have children once again later on with Del, having a girl - Kitty - and a boy - Winston. Over time, Kitty would become a legend of her own with her best friend Taiga and that led to them growing up and having children of their own. X then became a grandmother with Hess' birth and she finally became a true family woman. Eventually though Dias returned with Kaleb and X had to reunite with her long lost firstborn son. With the rest of her family now grown up, X has spent her time training and getting to know Kaleb, and after a brief Weapon/Dragoon War where she got Dragoon cells inside her body, X has decided to join the military once more.