Scorpion serves as the initial antagonist within the Eternal organization, introduced as its first active member. His human guise features brown skin, short red hair, and attire of black pants, boots, jacket, and a long crimson scarf. This facade conceals his true scorpion-like humanoid form, characterized by sturdy brown armor with lighter lavender-purple sections across the chest and lower legs, accented by teal gem-like details at the leg joints. A helmet-like structure partially obscures his face, suggesting an anthropomorphic origin.

Personality-wise, Scorpion displays a notoriously short temper, particularly when facing mockery or disrespect—traits vividly exposed during clashes with Bunbee, whose persistent misnaming sparks intense irritation. Despite this friction, he gradually forms a genuine, albeit reluctant, bond with Bunbee, eventually demonstrating protective concern distinct from other Eternal members' treatment of him. Scorpion also holds knowledge of Syrup's background, hinting at prior connections potentially tied to Syrup's history as Eternal's former delivery boy, though specifics remain undisclosed.

Tasked by Eternal's administrator Anacondy, Scorpion relentlessly pursues rare artifacts, most notably the Rose Pact essential for accessing the Cure Rose Garden. His early confrontations with the Pretty Cure team occur shortly after their powers are restored, establishing him as a recurring combatant. In battle, he deploys Hoshina—animate constructs formed by embedding Eternal's tools into inanimate objects—to attack or obstruct the Cures. His story culminates in defeat during a clash where Milky Rose executes her "Milky Rose Blizzard" attack. In his final moment, Scorpion acknowledges Bunbee with a whispered farewell, underscoring their evolved camaraderie.