Juliana is an 18-year-old shrine maiden with auburn hair, brown eyes, and standing 1.68 meters tall. She serves faithfully as an attendant to the Mamamega within their all-female utopian world. Her primary duty is protecting the Mamamega and assisting in safeguarding the Astro Star, a magical artifact that absorbs external evil to maintain paradise's purity.

A master swordswoman, Juliana wields her weapon with significant proficiency. She effortlessly counters magical attacks, such as deflecting Rurubell's bubble-based assault and retaliating with a powerful energy blast from her sword. This occurs during a misunderstanding where Juliana mistakenly attributes a subsequent deadly attack to Lilith and Rurubell, leading her to pursue them aggressively.

Her distinctive combat attire consists of a leotard featuring a cleavage window, accessorized with high-class gloves, noted for its revealing nature compared to other heroic characters.

Juliana embodies the "Fiery Redhead" archetype, exhibiting a tough and easily provoked demeanor. She reacts with intense anger to perceived threats, like Rurubell's magical test. Despite this volatility, she collaborates effectively with fellow shrine maidens Lilith, Stashia, and Rurubell against Yamimama's forces, who aim to steal the Astro Star and conquer their paradise.

She participates in the Mamamega's coronation ceremony, disrupted when Yamimama's attack results in Lilith's kidnapping and the Astro Star's theft. Juliana then joins Stashia on the rescue mission to recover both Lilith and the artifact.

Her narrative function centers on combat-oriented confrontations, specifically serving as the heroic counterpart to the villainous swordswoman Rouge within Yamimama's faction.