Background
Grew up on a freighter until his parents were murdered by pirates. Escaped and took his family ship to the authorities with his parents bodies.
Everything was confiscated, including his family ship. Was held as "evidence".
(Was actually sold off by a corrupt beaurocrat)
Was taken in by an old Duros mechanic, and found he had a lot of talent with machines.
He missed the wandering life, and took a few jobs on planet making deliveries.
Eventually made his way back out into the galaxy.
Motivation
Wants to find out what happened to his family home/ship.
Wants a ship big enough to house a small forge and machine shop to help ply his skills across the galaxy.
Hates pirates and will go out of his way to put a spanner in their works.