Ba'Tolo is a Tripkee gatherer in the Abyssal Forest of Khaar. He helps Ati tend to the Verbena groves, and explores the demiplane to locate resources. He is a Fiend-Keeper, a Tripkee tiefling, which has given him the bright colouration of poison dart frogs. His skin is just as poisonous as the animal he resembles, and carries a fiendish essence to it that makes it even harder to treat.
Ati is immune to his poison, which makes them suited to help each other.