Diglasse is a character from The Demon Sword Master of Excalibur Academy who serves as an instructor at Excalibur Academy. She is specifically in charge of the 18th Platoon, overseeing a group of students including main characters such as Leonis, Riselia, and Regina.

In terms of appearance, Diglasse is described as a woman who wears a military uniform, reflecting her role within the academy's structured and militaristic environment. Her position involves information management, suggesting she works with data, communications, or strategic intelligence to support the academy's operations.

As an instructor, Diglasse acts as a commanding officer who assigns missions to her students. She is shown delivering serious briefings, such as when she informs the 18th Platoon about a critical investigation mission concerning a deserted city. In this capacity, she provides clear orders while also acknowledging the dangers involved, granting the platoon leader the authority to withdraw from the mission if a crisis emerges. Her demeanor during these briefings is calm and collected, carrying a tone of gravity appropriate for the risks her students face.

Diglasse maintains a professional relationship with the members of the 18th Platoon. She interacts directly with students like Riselia Crystallia and Elfine, relying on them to carry out reconnaissance and combat duties as knights wielding Holy Swords. Her role places her as an authority figure who blends mentorship with operational command, trusting her platoon to handle dangerous assignments while setting guidelines for their safety. Information regarding her personal background, deeper motivations beyond her duties, character development throughout the story, and specific combat or magical abilities is not available.