Muria serves as chief of the royal capital Ishurna's intelligence department. She is a young human woman of average height and weight with light skin, wide red eyes, and long amaranth-red hair tied in two ponytails secured by black ribbons. Her typical attire consists of a long-sleeved pink dress featuring golden decorations, a burgundy skirt layered over a white petticoat, and burgundy shoes accented with gold. Her figure exhibits significant physical maturity, particularly her bust size, which exceeds that of characters like Tachibana and Yugrain.

Personally, Muria demonstrates strong loyalty and respect towards the royal family and the heroes fighting the Demon Lord. She is welcoming, diligent, and earned her position at a young age. Despite her role, her information-gathering skills prove lacking, often resulting in her capture by enemies. She possesses a fondness for cute things and is notably susceptible to flattery, traits that can undermine her effectiveness.