Few moments in Peter Jackson's The Lord of the Rings trilogy are more memorable than when Gandalf the Gray faces off against a literal demon of shadow and flame: a Balrog, nicknamed Durin's Bane. The battle between the two is epic, and has come to be an icon in pop culture. While fans of the series certainly remember the fate that befell Durin's Bane, less is known about the rest of the Balrogs.