The name "Lysop" may refer to Usopp, the sniper and inventor of the Straw Hat Pirates, as depicted in "One Piece: The Giant Mechanical Soldier of Karakuri Castle." During the Mecha Island events, Usopp works on upgrading Nami's Clima-Tact. He actively participates in solving the Golden Crown legend's riddles, initially suggesting the "two moons" clue refers to the moon and its reflection, though this proves incorrect; he later correctly deduces that striking the serpent statue's eyes reveals a hidden entrance. Usopp expresses concern for the Going Merry when the giant turtle island moves dangerously. He engages in an unspecified contest against the island's leader, Ratchet, and exhibits characteristic reactions like chasing Luffy for eating his food. In the climax, Usopp collaborates with Sanji and Zoro on a combined attack enabling Luffy to destroy Ratchet's mechanical castle and free the giant turtle.