Queen Medb appears in the comedic OVA *Fate/Grand Carnival* as an exaggerated reflection of her established persona from *Fate/Grand Order*, amplifying core mythological and narrative traits for parody. As the Queen of Connacht from Celtic mythology’s Ulster Cycle, she embodies a duality of purity and deviousness, openly pursuing carnal relationships with kings and warriors while maintaining a regal facade. Her legend centers on instigating the Táin Bó Cúailnge war against Ulster, driven by her obsession with the warrior Cú Chulainn—the only man who resisted her advances—and her desire for treasure. This fixation persists in her Servant form, manifesting as intense, comedic resentment toward Cú Chulainn. Participating in a Chaldean sports festival within *Fate/Grand Carnival*, her canonical need to dominate attention surfaces during a swimming event. She competes with female Servants Nero Claudius, Carmilla, Ishtar, and Meltryllis in a heated argument over superiority in beauty and appeal, satirizing her self-proclaimed status as the "main character of the world’s stage" and her belief that all exceptional individuals, especially men, rightfully belong to her. The race concludes with Nitocris winning unexpectedly while Medb and the others are distracted, highlighting her competitive yet easily diverted nature. Her skills and Noble Phantasms underpin this portrayal. Charm abilities target males, referencing her "Alluring Nightingale" skill and Noble Phantasm "My Red Mead," which forces men into thrall via an enchanted drink. Her Noble Phantasm "Chariot My Love" deals amplified damage to male targets, embodying her legend of dominating men. Leadership and charisma are represented by skills like "Queen’s Discipline," which boosts male allies’ capabilities, aligning with her role as a commander in the Ulster Cycle. Her personality—a blend of entitlement, vanity, and theatricality—drives the comedy. She views the Master-Servant dynamic as a "play" to be enjoyed, consistent with her *Fate/Grand Order* portrayal where she treats her contract as a temporary arrangement for amusement, believing herself the "eternal lady" destined to dominate all things. Interactions in the OVA emphasize rivalry-driven humor, utilizing her historical connections to Fergus mac Róich, whom she manipulates into lending his Noble Phantasm, and Cú Chulainn, her unattainable obsession, for absurdity.