Hlam

Hlam
This venerable human monk lives in a cave halfway up the side of Mount Waterdeep. Hlam is the grand master of the Order of the Even-Handed, a small monastic group devoted to Tyr. Would-be students periodically visit him to learn the Way of the Sacred Fists, which combines cleric magic and monk training. They usually return to the city confused, bruised, and not inclined to visit again.
In times of great peril, Hlam can be called on to help. Sometimes he offers pearls of wisdom, and sometimes he descends from his cave to set things right with fisticuffs. He can show up at any point in the story as a helpful figure, and the characters can visit him in his cave if they need guidance or training. The Order of the Gauntlet considers him a staunch ally.
Hlam is immune to disease and doesn't require food or water. Although he ages, he suffers none of the frailty of old age.