Accidental rebel - being outside the law, Rook took a lot of contracts from crime bosses and cartels, one of which was a kill contract for an admiral Danvers, the contract was successful but rook made a mistake and soon saw his face on every holovid and bounty hunters database in the galaxy. Everywhere he seemed to go, there would be a hunter or stormtrooper right around the corner ready to take him in. After weeks of this intergalactic manhunt, Representatives from the rebellion contacted him and offered him safety from the imperial dogs hot on his tail, in return, he'd have to work off his debts by joining the rebellion.
Honour - Rook is motivated to fight for the rebellion because of his code of honour, he is obligated to be a part of them until he works his debt to them off or the empire falls, whichever comes first
Combat victory - 0 - fighting is one of the only things Rook is good at, it's what he's done most his life, from his first school scrap, to arena bouts to fighting on unknown moons and planets for those who've payed him the most, so that he will do what he does best for the rebellion.
Rook is a ruggedly handsome, clean shaven man who has various nicks and scars all across his arms and body. He has a rifle slung across his back, with his stun pistol and truncheon both in holsters at his belt.