He has been the ruler of the largest, wealthiest, most populous, and most powerful realm on Dwilight. Why wouldn't he be a bit arrogant and heavy-handed? He's convinced he's doing the right things, for the right reasons. And he's a bit of a religion zealot.
If that's the case, you'd have to add "foolish" to his characteristics because clearly then he hasn't heard about the consequences of pride and its timing in relation to the fall.
