Daisuke is a togruta who was born on his species’ homeplanet, and didn’t know much about the wider galaxy until his late teen years.
As a togruta, everyone of the species should have a purpose, something that they are good at, because if they aren’t, if they’re one who is not good at anything and isn’t useful to the pack, they get left behind. At first Daisuke never had a purpose, he couldn’t think of anything he was good at and couldn’t be all that much use to his clan, so he started helping others and lightening their burden as he couldn’t do much else.
That became his purpose to his clan, to help others with their work so he became of use.
In his late teen years he met a man, a traveller from another world who was not like the togruta, the man tinkered with technology and made weapons out of this technology, which made Daisuke curious about the tech and the methods of making things to help people. So he signed on to help his new friend and mentor, to assist in his creations and learn what he could about it, and that led him to what he has become.
Personal improvement - Dai likes to improve his skills and make himself more useful to others, and one of the best ways is to assist others and create things to make their work easier, so that’s what motivates him, improving himself to be useful to others
15 - criminal - after coming off the togruta homeplanet, Daisuke, now nicknamed ‘dai’ by his mentor, travelled around the outer rim with his mentor creating weapons, selling them off and performing odd jobs to make ends meet, and due to this he found himself taking on jobs with criminal syndicates to fix ships and make weapons for people, even creating ‘throwaway blasters’ made cheaply for assassins to kill targets then easily disassemble or destroy afterwards.
After a few years of this and a few close encounters, he built up a portfolio in government databases of associating and creating weapons for criminal groups.
So he’s stuck to the outer rim, where most frontier planets don’t have organised, well funded government forces if any, but he is still another criminal in the database.