Like many of his fellow soldiers and teacher at DWMA, Sid is a capable fighter who is loyal to his teammates and students, although prone to some eccentricities. Strict with many of his students and, after his transformation into a zombie, frightening to some of them, Sid continues to mentor these students, in life and in death, especially his Central Intelligence agents Akane☆Hoshi and Clay Sizemore. As a meister, he is a suitable partner to Mira Naigus, as well as capable of wielding Death Scythes such as Azusa Yumi and Spirit Albarn. As a trusted member of Death's staff, he has frequent one-on-one meetings with the head of DWMA, making him a fierce opponent against Arachnophobia and any of Death's other enemies.