Gonz

ゴンズ

Slon the Rook first appears alongside Kon the Knight. Bishop Ladja summons the pair to assassinate Pankraz in the Ancient Ruins, but they fail, proving unable to withstand Pankraz's power. In retaliation, Ladja holds The Hero at neckpoint, threatening to slay him with his scythe and condemn his soul to eternal damnation in Nadiria unless Pankraz yields. Pankraz complies, allowing Slon and Kon to strangle him until his HP depletes. Ladja delivers the final blow, and the trio takes The Hero and Prince Harry to Crocodilopolis as slaves, leaving the Great sabrecub behind.
Slon does not reappear until many years later at Talon Tower, by which time The Hero is an adult. Slon guards the Dragon's left eye, while Bishop Ladja guards the other; both were dispatched following Zenithia's partial restoration to prevent the party from fully restoring the flying castle to its original splendor. He does not seem to recognize The Hero, viewing him merely as a threat to the Order of Zugzwang that must be extinguished. Unlike most other major bosses, Slon's death is not shown on-screen; he simply vanishes after his defeat.
Although Slon did not recognize The Hero, the Party Chat immediately following the battle makes it clear that The Hero recognized Slon, with his children noting that The Hero seemed very perturbed.