Despite his miserable upbringing, Serpico stands out as polite, gentlemanlike and sincere. He is very protective of Farnese, his half-sister, and caters to her every whim, viewing her as a guardian angel for saving him from his old life on the streets. In spite of Farnese abusing Serpico in the past, her safety and well-being is Serpico’s highest priority. Serpico had developed a dislike of how much Farnese looks up to Guts, fearing that his inner darkness would be the death of his half-sister. However, after rejoining Guts’ party and sailing to Elfhelm, Serpico has soon learnt to trust the Black Swordsman and the rest of the group, fighting alongside the group and frequently conversing with them and empathizing with their struggles. His relationship with Farnese changed ever since his prolonged adventure with his party and the arrival of Roderick.