Axton was some sort of an Ex-soldier wasn't he? does this mean that there's a war going on in the Borderlands universe perhaps there is some extremely powerful company or civilization that's fighting a war? that would be pretty darn interesting to see in any future titles.
he doesn't kill the vault hunters though. He pretends to try and kill them so that they ally with the crimson raiders. He then leads them to sanctuary and tricks them into disabling sanctuary's defenses from the inside so that he can attack.
well she was not his daughter anymore the moment he hook her up to the eridium injector He was mad because she kill the only person he love, his wife But he still find a reason for his wrong doing, basically going insane and forclaim that he is the good guy, and Crimson Raider is actually the bad guy (roland and Lilith fuck his over and burn his face) Remember the collar around her neck? That is what Jack use to control her like the one that he stuck on Lilith neck