Background
Daska is Twi'lek from Ryloth originally. He was taken into Jedi training and discovered he had a high proficiency in the Third Form style of lightsaber combat. He did not spend as much time developing his skills with the force as he should have compared to his skills with the lighsaber.
Tragically, before his full training was completed, Order 66 occurred. He had already created his lightsaber at this point, which is his only relic of his past life. He always keeps it on him, but has not ignited it for years. He continues to practice his Third Form katas to stay sharp. Unable to fully develop his force potential, he decided to study medicine and became a doctor.
Recently, he slipped up and used Force Protection, the one ability he had mastered enough to practice over the years, to shield himself and some innocent bystanders from what could have been a horrible speeder accident. One of those bystanders was an Imperial Agent, who was conflicted, but did eventually turn Daska in. In a last minute change of heart, the agent covertly warned Daska so that he would have a head start. Currently Daska is on the run from the Empire and holed out in a little tavern.
Motivation