Professor Big Gelato commands the heroic Gelato organization from its futuristic base, utilizing advanced systems to monitor threats posed by the enemy group Gekko. As founder of the Freezing Squadron Gelato 5, he personally engineered their battle suits, weaponry, and technology, including the King Gelato Robo tested at Shonan Beach. Serving as the team's scientific advisor, he continuously develops new equipment, such as plans for the unified Gelato Claymore weapon combining the Gelato 5 arsenals – a project initially delayed by budget constraints until sponsorship funds were secured.

He enforces strict regulations within Gelato, expressly forbidding romantic relationships among members. Ironically, he becomes the inadvertent catalyst for the secret relationship between Gelato 5 leader Fudo Aikawa (Red Gelato) and Gekko's Desumi Magahara (Reaper Princess). When Fudo confides his love for someone from "a different world," Professor Big Gelato urges him to confess, declaring heroes deserve love and offering to shoulder any responsibility, unaware Fudo refers to an enemy combatant. This advice directly enables Fudo and Desumi's relationship, contravening his own rules.

Resource management is a core aspect of his leadership. He prioritizes funding for Gelato's operations, exemplified by accepting a promotional sponsorship from Kishimoto Wedding to finance the Gelato Claymore's development, despite Fudo's objections about potential misunderstandings with Desumi. Professor Big Gelato justifies such pragmatic decisions as vital for maintaining peace. Physically, he is an adult male with grey hair, black eyes, distinctive facial hair, and prominent eyebrows.