|Hair||Blond, Blunt Bangs, Long, Sidehair, Straight|
|Eyes||Red, Slit Pupils|
|Clothes||Leotard, Puffy Sleeves, Uniform|
|Role||Comrade, Non-human, Priestess|
|Visual novels||Side character - Umineko no Naku Koro ni Chiru|
|Voiced by||Itou Shizuka|
Gertrude is a senior aide in Eiserne Jungfrau, and a first-class priest. She wears a uniform similar to Cornelia's, and appears as a girl with red eyes and long blond hair. Like her comrades, she appears extremely deadpan when on duty, but is actually a very charitable character well-liked by her juniors.