Lupa Gemenii: Unlike many Sacred Gear holders, Starrk's Sacred Gear is not sealed completely in his body. Instead, half of it is sealed in the form of another person, his own comrade, Lilynette Gingerbuck who, while a separate and distinct being, is an actual part of him. This is because Lupa Gemenii holds the sealed souls of Romulus and Remus, the founders of Rome in ancient times. The full Sacred Gear takes the form of two ornate pistols, each of them the same length. As the "older twin" containing Lupa Gemenii, Starrk is able to use Lilynette as his second pistol when they are together, otherwise each holder has access to only half of the Sacred Gear.
Hollow Flash: Lupa Gemenii's primary ability. From its gun(s) it releases not bullets, but beams of blue energy. While a standard ability for the guns, Starrk's abilities with it are very unique. As noted, unlike previous holders of Lupa Gemenii, he can apparently fire a Hollow Flash without a "fighting pose", meaning he can fire it without any warning from body gestures. Starrk can charge and fire it rather quickly, leaving even less time for his target to react. He can fire his Hollow Flash from various points on his body as well, such as from either hand, his chin, and his chest.
Infinite Ammunition Hollow Flash: Starrk uses his pistols to simultaneously unleash a powerful barrage of Hollow Flashes which, because of their density and grouping, appear to fuse together into one large blast. He can change the direction of this attack while firing, making it extremely difficult to avoid.
