Dr. Hamilcar Barcas, a central antagonist in the Guyver universe, began as a 17th-century European merchant whose voyage to the New World ended in shipwreck. Washed ashore as the sole survivor on the island of Silha, he discovered the powerful being Archanfel in suspended animation within a temple. Overwhelmed with reverence, Barcas awakened Archanfel and was transformed into the first Zoalord, receiving a zoacrystal embedded in his forehead. Archanfel tasked him with recruiting ten others to form the Council of Twelve, establishing the foundation of the Chronos Corporation. As the third eldest council member, known as "Barcas the Elder" or "Old Bal," he serves as Chronos's foremost scientist. He designed the first Hyper-Zoanoids and completed optimization processes for most Zoalords, including Richard Guyot at Chronos's Arizona headquarters. His expertise extends to creating specialized Zoanoids like the Guyver-hunting Enzyme III model. Despite his pivotal role in Chronos's global dominance after X-Day, Barcas exhibits ruthlessness and sadism, exemplified by his transformation of Sho Fukamachi's father into the Zoanoid Enzyme II to ensnare Sho. Barcas wields immense telepathic power, second only to Archanfel among Zoalords. His thought waves command Zoanoids across vast distances, force transformations in optimized humans, and induce self-destructive actions. Though his physical form appears frail and he rarely demonstrates a Zoalord transformation, relying primarily on psychic abilities, he personally intervened in Japan following the theft of three Guyver units from a Chronos facility, distrusting local leadership and deploying Hyper-Zoanoid Team Five. After failure during the Arizona Relics incident, he vowed to retrieve stolen control spheres from Guyver III, a mission Archanfel forbade as futile and dangerous. In the live-action film adaptation, the character diverges significantly as "Fulton Balcus," portrayed as the sole Zoalord whose primary objective shifts to acquiring a Guyver unit for personal power. This version lacks an elderly appearance, dresses in modern attire, displays visible telepathic control over Zoanoids (like compelling Oswald Lisker to self-harm), and meets destruction by the Guyver's Mega-Smasher. The character's name draws from the historical Carthaginian general Hamilcar Barca, father of Hannibal, symbolizing a "father of generals" connotation within Chronos's hierarchy.