Saul
Saul, 35, is the staunch security arm of the compound. He's also seeking redemption - he has a past that he's trying to escape.
He's found a sanctuary of sorts with Momentum - and has been given a purpose in life (protecting Momentum and the compound), which has helped him considerably. He's a follower who finds comfort in being told what to do.
A tragic, lost and damaged character but utterly menacing.