Sandra Wu (Earth 427-0)

Sandra Wu is the mother of Cassandra Wayne and Jason Todd-Wayne. Due to her extensive training and meta abilities, she is best martial artist in the world and has only been defeated by her deceased sister Carolyn and her daughter Cassandra. After the birth of her daughter she began going by the callsign Lady Shiva.

Early Life
Sandra was born Dorji Kunzang in a small village on the Tibet-India border, near where the All-Caste was hidden. The proximity of the All-Caste meant that a higher percentage of the village's residents were born metahuman in comparison to the general population. Because of this and the instability of the border, Sandra's village was protected by a guardian chosen at a young age for their combat potential. This guardian was traditionally known as Lord or Lady Shiva after the first to hold the position. However, in order to keep their guardians in check, the trainers would allow Shiva to bond closely to another as a child, who could then be used as leverage. Sandra was trained to be one such guardian, but left with her sister in her teens, refusing to allow her sister to be held hostage to control her.

Sandra and her sister emigrated to the US where they took the names Sandra and Carolyn Wu in order to hide. They soon became known on the tournament scene for their skill in Judo and Karate. Together they traveled the US, participating in and winning various tournaments.

In late -17, Sandra met Willis Todd in a bar in Gotham. The two had a one night stand which resulted in Sandra getting pregnant, but by the time she realized this she and Carolyn had already left Gotham. Sandra was unsure about being pregnant, but believed she would come to love her child. However, as her pregnancy progressed she found herself disliking the prospect of being a mother more and more, after giving birth she left the infant with Willis, who named him Jason.

Origin
Shortly after she gave birth and returned to martial arts, Sandra was in a tournament attended by David Cain, who had heard rumors of her skill. Recognizing her powers for what they were and that Sandra was holding herself back, Cain killed Carolyn and left her body for Sandra to discover in the belief that this would lead Sandra to explore her true potential.

Cain then seduced her in her grief, tricking her into believing Richard Dragon was the one to kill Carolyn. Sandra began training harder than ever before, however before she could seek her revenge she became pregnant again, this time with her daughter, Cassandra Wayne. Cain promised her he would help her seek revenge, but instead absconded with the unnamed infant as soon as Sandra gave birth. Sandra began seeking revenge on her own and took the name of her village's guardian, Lady Shiva, as her own. Upon finding Richard Dragon, however, she discovered that Cain was the one who had killed her sister, and she swore in turn to destroy him.

Abilities

 * Martial Arts
 * Judo
 * Karate
 * Leopard Kung Fu
 * Dragon Kung Fu
 * Savate
 * Dim Mak
 * Weaponry
 * swordsmanship

Powers

 * Indomitable Will: Sandra has been shown to be capable of deadening her body to physical pain and control her bleeding rate
 * Body Reading: Sandra has the natural ability to read body language extremely well. With her training, she can often predict what her opponent will do.

Trivia

 * the name Dorji means "indestructable" or "diamond" in Tibetan