Sid is a warrior from the holy city. Alongside Galk, he confronts Clare on the rooftop during patrol. Initially, Sid comes across as brash, arrogant, and short-tempered. However, he later assists Clare in her battle against a powerful Yoma, which results in him breaking his leg. As Clare and Raki depart the city, Sid bids farewell to Clare with a kiss, leading to a fight between him and Raki after Raki kicks him in the groin.
Seven years later, Sid reappears, helping Miata and Clarice evade guards. His arrogance and rudeness seem to have diminished since his first appearance. When Agatha, a former Number 2 awakened being, attacks, Sid becomes central to the defense efforts. While the guards distract her, Sid attempts to strike her from behind but gets caught just before attacking. Agatha praises his skill and invites him to "have some fun" due to his attractiveness. After Sid refuses, she tries to kill him but Galatea intervenes and saves him. Sid reveals that Raki had visited Rabona a year before Clare's return, noting Raki's growth.
In earlier parts, Sid uses throwing daggers, but during his attack on Agatha, he wields a short sword.
