Sorcerers and Spelunkers
Stool is a mushroom.
Stool was a silent mushroom who was a passive participant of the party. They were cared for by the others, often carried on the back of Prince Derendil.
When the party arrived at the grove, Stool rejoined their people. However the mushroom people loyal to Sovereign Basidia had to evacuate as the others had gone mad and set to raise an abyssal lord.
Stool is currently with their people who are refugees seeking a new home.