Out of the Abyss
Prisoner of the drow
This hulking beast is a member of an underground race. They are often used as servants/slaves of the drow. They have a powerful build and sharp claws, but not a lot of intelligence. Derendil has an unkempt look that is natural to this race, but compounded by his captive/slave position. Despite this he attempts to carry himself with a rigid upright posture.
Derendil is an elven prince who was transformed into a quaggoth by a wizard usurper to his throne. Banished to the Underdark, he finds himself enslaved by the drow.
At least that’s the way he tells it.