Farangis is ordained as a priestess of Mithra and guardian to Prince Arslan, bound by a prophecy since his birth. Her name originates from Middle Persian, signifying "beloved by all," with historical texts also referencing her as Wispan-Friya.

She possesses shiny dark hair, sharp eyes, and a curvy figure. Her typical attire consists of a revealing white top, skirt, cape, and thigh-high brown boots, accessorized with red teardrop-shaped earrings and a spirit-communication whistle. This outfit has drawn criticism for impracticality and differing from her initial novel portrayal, where she wore concealing men's clothing. Adaptations vary: the OVA features a less sexualized design, the 2015 anime emphasizes fanservice through camera angles, and the manga initially replicates the revealing outfit before offering marginally more practical alternatives.

Formally dismissed from her temple, potentially due to jealousy over her beauty, Farangis remains dedicated to her mission, fueled by disdain for Lusitanian practices. At 22 years old during the main events, she exhibits a cool-headed, rational personality and notable alcohol tolerance. She harbors lingering affection for her deceased lover, Eagleelus, who died before the story begins.

As a warrior-priestess, Farangis wields the Bow of Mithra and a sharp sword. Her combat abilities include summoning spirits via whistle or flute, firing energy arrows, and executing wind-based attacks. She converses with spirits for intelligence and ally protection, viewing battle as a necessary evil to restore balance.

Her loyalty to Arslan evolves from duty to genuine allegiance as she observes his leadership. Within his camp, she acts protectively, often adopting a sisterly role toward Alfreed. She consistently rejects romantic advances from Gieve and Kubard, maintaining emotional distance due to her unresolved past.