Princess Leia was brought up a member of the Royal Family of Alderaan, but also worked with the Republic to try and defeat the Empire.
She put the plans for the first Death Star into R2-D2 with a message for Obi-Wan Kenobi pleading for his help.
But she was captured by Darth Vader after the droids escaped and while on board the Death Star had to watch her home planet destroyed.
She was rescued by Luke Skywalker and Han Solo and helped direct the successful attack on the giant space station.
Leia went with the rebels to their new base in the Hoth system and helped direct the evacuation when the Empire attacked.
She fell in love with Han and went with him to Cloud City where she watched him captured by Darth Vader and frozen in carbonite.
She helped free Han from Jabba the Hutt on Tatooine, even killing the slimy enemy during the escape.
She then was a key member of Han's strike team on the moon of Endor, helping befriend the Ewoks who helped bring down the Death Star's forcefield before it was destroyed.
Before Luke returned to fight Vader he told Leia he was her brother, something she told Han as celebrations that the Empire had falled began around them.