Spunky myconid sprout
Stool is a small, nearly featureless myconid, and moves like a small dog.
Stool is a young myconid who is a prisoner of the drow because he was previously captured by Sarith Kzekarit. Stool using telepathic spores to communicate with the other prisoners, eagerly acting as a conduit for others to talk if they do not share a language. He becomes quickly attached to those who treat him nicely and acts much like an enthusiastic younger sibling.
He became attached to the goliath, and when the goliath was slain, Stool fled into the wilderness. His ultimate fate is unknown to the party.