The Green Bell of Uthool is one of three magical items that corresponds to the impish brothers known as the Demons Three. A sorcerer named Felix Faust once collected the Bell, along with the Silver Wheel of Nyorlath and the Red Jar of Calythos and took control of the demons. However, the Justice League of America defeated Faust and the demons were banished. The Green Bell of Uthool aligns with the demon known as Abnegazar.