A member of the Eiserne Jungfrau led by Dlanor and her subordinate, Cornelia. Gertrude comes from the 7th District Repentance Enforcement Agency of the Great Court of Heaven, and she is an Assistant Inquisitor of Heresy. When fulfilling missions, Gertrude is sangfroid, expressionless, formal, and flawless, following orders from Dlanor. When off-duty, Gertrude is compassionate. She can summon barriers that block objects. How little she shows emotion is often very intimidating to others.