I like him as a character, but I agree with 1varangian that his writing is a bit all over the place. I agree that his boasting doesn't really achieve the desired effect when it's in a vacuum like this. We don't have enough context in the world to really judge if we can take his claims seriously or not. I think his motives work though. He failed in a major way and that traumatized him. So when he was offered power, he took it. I think he does genuinely want to do good with that power, but he's immature and easily manipulated. Those motives, whether you like them or not, make sense and are reaosnable. As for his combat performance, I think part of the blame there can be laid on the combat AI. It's concerned with winning, not staying in character. Plus I'm pretty certain he's actually meant to be a pact of the blade warlock, so once that's been implemented, the dissonance shouldn't be as intense.
