Helena von Bähbem is the niece of Ernst von Bähbem. A childhood acquaintance of Makoto Isshiki and Itsuki Kisaragi, she serves as the second in command in the Bähbem Foundation. In addition to being a childhood dabbler in witchcraft, she was a potential instrumentalist, but passed the ideal age without realizing her potential. This makes her jealous of Quon and others that might succeed in tuning the world