Dealer Mask, an Angry Mask entity, serves as a guardian within a realm dedicated to forging a Perfect God. Her tall, imposing figure is clad in a sharp casino dealer uniform, accentuated by long, dark hair swept into a low ponytail and a stark white-streaked bang curving along her left cheek. Unlike the emotionless Smiling Masks, Angry Masks like her possess fractured self-awareness and speech, though their autonomy remains shackled to programmed imperatives.

Stationed at strategic points such as a secured door encountered by Rika Honjo and Shinji Okihara, she enforces the realm’s rules with reluctant precision. When Rika abandoned her investigation, Dealer Mask’s visible relief betrayed an internal rift—a programmed enforcer yearning to escape her role, quietly hoping Rika might one day shatter her chains.

Her encounters with Yuri Honjo and Mayuko Nise deepened this duality. Witnessing Mayuko defy the Suicide Command, Dealer Mask invoked an exception in her directives, disclosing the Hibernation Command—a stasis protocol for defective Angels—and directing Yuri to an Emotionless Mask capable of halting it. Though she cautioned against the dangers of meddling with such entities, her assistance required explicit approval from her programming, underscoring the rigid limits of her agency.

Later, she compelled Yuri to vow silence after warning of the lethal stakes in challenging the realm’s hierarchy, predicting the inevitable clash among God Candidates vying for dominion. While her own story arc faded before these conflicts climaxed, fleeting acts of defiance—a hushed plea, a calculated risk to aid humans—hinted at a submerged will to defy her fate.

Bound eternally to her function as a Guardian Angel, her unresolved journey lingers between duty and the faint, unquenched spark of rebellion.