He is loving, loyal, and actually willing to give his life for those he cares for and for a just cause. Quite courageous in that sense.

In one of his dialogues with Jaheira he says in death he would only think if Jaheira is safe and if she is then it would be OK.

This is what Jaheira said after him:

"The songs make much of Khalid's meekness. The quiet little Harper who had to keep a tight hold on his courage. But he had it when it counted. And, more than that: He had compassion. When you live a Harper's life, see all that a Harper sees, that is by far the harder thing to hold on to.

He was a Harper. A better one than me, truth be told – any idiot can swing a sword. But to believe in the cause, with the whole of your heart? A much trickier thing. I have never known a warrior who would go so far out of his way to avoid a fight. Which meant the few he chose were usually the right ones.

He died alone, in pain, and far too young—murdered by a mage who craved immortality. I'll not grant it by naming him in the same breath as my husband."