Stool was a myconid sprout born in Neverlight Grove with all its people. During the Rage of Demons, it was captured by Sarith Kzekarit, who took it to the drow outpost of Velkynvelve.

Stool’s main concern was to return to its fellows. If it grew attached to humanoid people, it acted like a curious and enthusiastic younger brother. At the hands of the drow, it felt lonely and frightened.

Thanks to its spores, it could communicate telepathically with other creatures and could also act as bridge between two creatures without a common language in order to communicate.