Power: Greater deity Title: Boss of Earth, Earthlord, Gnarly One, Boss of the Earth Elementals Alignment: N Worshipers: N, NG, NE, LN, CN Clerics: LG, NG, LN, N, LE, NE Symbol: Mountains on purple Domains: Cavern, Earth, Metal, Time Portfolio: elemental earth, solidity, changelessness, oaths Favored weapon: A stony fist (warhammer) Festivals: Midwinter (Midwinter)

Grumbar is the "Elemental Lord of the Earth." He is closely associated with solidity, unchanging forms, and the earth. He is known for his insouciance to his devoted followers; thus, the Church formed in his name is heterogeneous and chaotic. His alignment is Neutral.

Grumbar's foe is usually Akadi, and he has dependable allies in Kurtulmak and Dumathoin. The holy symbol of Grumbar is a sardonyx combined with the symbol of Grumbar (mountains of earth) and is worn by priests of Grumbar.