Rage of Demons
Sentient Gelatinous Cube
Glabbagool was a gelatinous cube in the Oozing Temple. When Juiblex arrived in the Underdark, it was granted sentience. It met and befriended a party of adventurers escaping the drow slavers of Velkynvelve, even offering to travel with them or gift them a magical mace located within its oozing form.