Princess Iron Fan, also called Queen Gruesome, rules the Flaming Mountains alongside her husband, King Gruesome (Gyū-Maō). She wields the powerful Basho-Sen fan, capable of freezing lava flows and volcanic eruptions. This fan becomes essential for the protagonists to bypass the volcanic barriers obstructing their pilgrimage. Demonstrating keen perception, she sees through the shapeshifting ruse when Alakazam and Sir Quigley Broken Bottom impersonate King Gruesome. She captures Sir Quigley and tries to prevent them from stealing her fan. Although Alakazam escapes with it, her actions contribute to its later recovery by her allies. Visually, she presents an elegant and beautiful figure, creating a striking contrast with her monstrous, bull-like husband. Her husband's ox-like design notably influenced the appearance of Bowser in the Mario franchise. During the film's climax, Sir Quigley Broken Bottom turns the Basho-Sen fan against her, freezing her solid in the battle against the Gruesome faction. This fate differs from her original *Journey to the West* portrayal, where she typically survives and achieves enlightenment. Her role emphasizes Adaptational Villainy compared to the source novel, as her husband actively seeks to consume the monk Sanzo (Prince Amat), firmly placing them among the antagonists. This contrasts with the original character's more nuanced motivations and eventual redemption.