Ullmina Bagliore holds the rank of Commander within the Inquisition's military structure, leading its elite Thaumaturges unit, the Miracle Makers. Her long blonde hair is centrally parted, revealing a prominent Inquisition insignia tattoo on her forehead, and braided to carry an Inquisition crest below her chest. She typically wears a white, long-sleeved dress featuring a high collar and short flared skirt, adorned with black stripes across the collar, sleeves, and skirt edges. Her eyes are golden.

Externally, Ullmina presents a devout and naive demeanor, employing religious mannerisms. Underneath this facade, she exhibits overtly perverse tendencies, frequently making suggestive comments accompanied by corresponding body language and vocal tones. She displays masochistic traits, particularly during combat, expressing a desire for pain. When thwarted or unable to achieve her goals, she becomes emotionally volatile, manifesting tearful tantrums and repetitive demands. A significant shift occurs later, where she develops a consuming obsession with capturing Seth. This fixation escalates to the point where she issues direct threats to fellow Inquisition members, such as Dart Dragunov, to ensure Seth's delivery to her.

Her primary ability is the miracle "Patrem Inquisitor, Institutor Of The Miracle, May Your Light Guide The Lost," enabling her to revive deceased individuals within a specific area for a limited duration. Within the Inquisition's decentralized command structure, Ullmina operates with considerable regional autonomy. Her interactions with other Thaumaturges, like Von Tepes and Verone, demonstrate her integration into the leadership, though her actions increasingly prioritize personal agendas over institutional discipline.

Key narrative moments include confrontations highlighting her directness, such as accepting Seth's blunt accusation of her being a "murderous old hag" without denial. Her intensifying obsession with Seth drives her to bypass standard protocols and manipulate internal hierarchies.