Why is it all these guys LOOK like something unkempt, filthy and slimey from under a rock to us but look like shining knights to the other side?
Dunno. Let's think a minute.
Traditionally when any of the old Biblical patriarchs wanted to talk to God the climbed a mountain and found him close to heaven, in the fresh air and sunshine, where they often saw him face to face (or face to burning bush).
Our heroes are Angels of Light
When mohammad talked to god, he wasn't looking for him, but was found by an entity of darkness in a dank cave, an entity who hid in the shadows, and spoke his piece as a disembodied voice, never daring to show his face.
Their heroes are angels of darkness...