An elven prince cursed to be a quaggoth
This quaggoth stands tall and straight, unlike many of its kind, and his eyes are far softer than one would expect. He carries himself like nobility.
Prince Derendil is a menacing looking quaggoth who mostly only speaks when spoken to but, when he does, he does so in urbane and fluent Elvish. In fact, he claims that he is not a quaggoth at all but is a prince of the elvish kingdom of Nelrindenvane in the High Forest whose kingdom was usurped by the evil wizard Terrestor.
During the aboleth attack, Sarith cut the quaggoth’s Achilles tendons to use him as bait so the rest of the party could escape.