Krrathknar was the errant fire spirit responsible for the strange forest fires that cropped up during Demeter's captivity in the Netherworld at the hands of the demon, the Wyrm of Worlds. When confronted, he fled to the Underground Forest in Azdun, where he was killed, his flames burning down the barrier that hid the chained Tsol'aa, Darnashta'i. Released from his bonds, Darnashta'i shared his knowledge of the Wyrm's escape from imprisonment and invasion of the Goddess of the Wildwood's corporeal form.