Background
Cygnus was a part of the Lasat High Honor Guard. When the Empire came and burned his world, Cygnus fought alongside his comrades, but was defeated by some kind of elite soldier. Instead of killing him, the soldier took Cygnus' bo-rifle. Isolated, surrounded, and weaponless, Cygnus fled the planet.
A week later, Cygnus was adrift in space without food and a failing life support system. Just as he was beginning to accept his fate, a slave ship found him. He fought, but was defeated for the second time.
A few days later, the slavers sold Cygnus to a gladiator-style colosseum in the Outer Rim. He spent the next (few years?) fighting monstrous beasts, coldhearted killers, and terrified newly caught slaves. He never lost once...not including the times he refused to kill fellow slaves, which his masters counted as a loss.
By the time his current employer found him, Cygnus had crafted his body into a finer weapon than it had even been on Lasan. Now he plans to use it against the Empire however he can.
Motivation
No One:
After the loss of his people and his defeat at the hands of an Imperial soldier, Orion was entirely alone. He took this job because he has nothing left to lose.
Vengeance:
Though he often tries to distract himself, Orion's hatred towards the Empire is always smoldering. He always looks forward to the next time he can let loose against some Imps.