Corkus joined the original Band of the Hawk after Griffith's mercenaries defeated his small gang of thieves. His background as a thief shaped his pragmatic and cynical outlook, though he retained deep loyalty to Griffith's ambitions. He resented Guts immediately, first trying to kill him to claim the reward for Bazuso's defeat and later orchestrating multiple failed assaults on Guts within the band. Corkus saw Guts as self-absorbed and undeserving of Griffith's attention, accusing him of acting like the sole bearer of profound suffering. Despite this antagonism, Corkus recognized Guts' formidable combat abilities and his value to the Hawks. He voiced concern when Guts faced mortal peril against foes like Boscogn and celebrated his endurance against the apostle Wyald. After Guts left the band, Corkus swore to kill him if they met as enemies, yet offered unexpected support when Guts returned to rescue Griffith. Corkus absolved Guts of guilt over Griffith’s capture, insisting the situation wasn’t his fault, and accepted his aid despite lingering bitterness. Corkus took pride in the Band of the Hawk’s ascent, expressing satisfaction when Midland granted them official recognition and knighthood. His devotion to Griffith remained unwavering, defending his leadership even after setbacks. Witnessing Griffith’s physical and mental decline post-torture shattered Corkus; he broke his sword in despair over the band’s ruined future. During the Eclipse, branded as a sacrifice, Corkus initially dismissed the horror as a nightmare. Overcome by terror, he sought solace from a female apostle moments before she transformed and devoured him.