Lysop corresponds to Usopp of the Straw Hat Pirates, depicted in *One Piece: Nejimaki Shima no Bōken*. He begins relaxing on a beach wearing red and white striped swimwear. When the Going Merry is stolen, Usopp loses his clothes and possessions, forcing him to rent a brown kimono and black hat from a wedding store. Later, he changes into an orange jacket and dark green pants, retaining his signature bandanna throughout the adventure.
Usopp's characteristic cowardice surfaces early; he attempts to flee danger by singlehandedly rowing a boat away during a confrontation with the Trump Pirates, inadvertently causing Akisu's music box to fall into the sea. After Nami's capture, Usopp joins the remaining crew and the Thief Brothers in pursuing the Trump Pirates to Clockwork Island.
Assaulting Trump Castle, Usopp hesitates at the gates but follows Luffy, Zoro, and Borodo after witnessing Luffy's resolve. When lieutenant Skunk One paralyzes most of the group with "devil-gas," Usopp overcomes his fear. He hurls himself onto Skunk One's gas nozzle, blocking it with his body. This self-sacrifice allows his allies to advance into the castle but results in Usopp's capture and crucifixion alongside Sanji. Usopp's actions demonstrate his capacity for courage when friends face direct peril, proving crucial to the group's progress within the castle.