You steal from the rich, give to the poor. dislike the authorities and are extremely generous!

race
weaponry
magic
appearance
life-style

any more info you can conjure.

Personally...

Race: Khajiit
Weaponry: Archery, dual daggers
Magic: Illusion
Appearance: Loveable rogue. Smiling eyes. Slender. Furry.
Lifestyle: Loveable rogue. Disdains authority. Tries not to kill anyone, especially innocents. Stays hidden as much as possible in cities. Lives among friends in wilderness getaway.

Imperial
Bow and Dagger
None
Based on Male Preset 10
Emphasise on Archery, Light Armour, Speech, and Pickpocketing