Super Woman

Origin: Kara was born in Argo City to Zor-El and Alura In-Ze. During Kara's naming ceremony, her uncle Kru-El attempted to kill her father and her uncle, Jor-El, intending to take control of the House of El for himself. However, the attempt was not successful, and Kru-El was arrested before being sentenced to the Phantom Zone.

As she grew, Kara developed a keen interest in history. As such, she became an avid student of the teacher and historian Catar-Ol.

Argo City survived Krypton's destruction as a result of the efforts of her father, though many of its citizens perished. Though her mother Alura survived the initial destruction, she eventually fell ill and died as a result radiation poisoning as the minerals in the soil beneath Argo slowly became Kryptonite. Ever the scientist, Zor-El created a solution; he would mass-produce lead shields and spread them over every inch of exposed land in Argo. Every hand was required to complete this massive task, including Kara's. The task was long and ardous, and by its completion, only five thousand citizens survived out of the initial eighteen thousand, and many who survived were still slowly dying of radiation exposure from before the lead shield was completed.

In the next year, she continued to survive in the slowly dying city, living a relatively solitary life. However, as stellar debris hit the exterior of the unsteerable Argo, it penetrated the city's air bubble, and asteroid fragments rained down on the city, penetrating the lead shield they had struggled so hard to build, dooming the survivors of Argo.

Desperate, her father salvaged what was left of the lead shield and his own creations and built a rocket capable of carrying a singular passenger, and used it to send his daughter out into the cosmos, leaving her as the the sole known survivor of Argo.

Kara eventually arrived on Earth at some point during the early years of her cousin Kal-El's career as Superman. During this period, he briefly put her in an orphanage as part of her cover, something that continued to be a sore subject later on in their lives.