Robert Accutrone is a Quincy and Sternritter of the Wandenreich, holding the Schrift designation "N". He possesses light brown swept-back hair, a full mustache, and thin-framed glasses. His attire is the standard Sternritter uniform: a hooded cloak over a calf-length white trench coat tied with a belt, a shirt with a blue tie, white trousers, and shoes; he sometimes carries a silver briefcase. Stoic and action-focused, Robert shows respect towards worthy opponents while maintaining absolute confidence in Yhwach's leadership. During the first invasion of Soul Society, he confronts Captain Shunsui Kyōraku. Activating his Quincy: Vollständig, Grimaniel (God's Step), grants him immense speed, enabling him to evade Shunsui's attacks and shoot the captain point-blank in the right eye with his Reishi pistol. He also kills a Riteitai soldier with a distant shot. Sensing Yamamoto's surging Reiatsu, Robert notes the shift in Shinigami morale but counters that the Sternritter draw equal encouragement from Yhwach's own battle. After Yamamoto's death, he exploits Shunsui's distraction to shoot him multiple times and later opens a dimensional portal via the Shadow technique to deploy Soldat reinforcements. Robert expresses shock at Uryū Ishida's designation as Yhwach's successor. In a strategy meeting, he questions Jugram Haschwalth's order for Sternritter to defeat captains using Bankai, prompting an explanation about crushing their hope. During the second invasion, he activates Grimaniel alongside fellow Sternritter and confronts Ichigo Kurosaki. He surprises Ichigo by appearing beside him and pressing his pistol to Ichigo's head, though Ichigo dodges the shot. Robert later informs Bazz-B that no Special War Powers are present among arriving Shinigami before joining the collective assault. Teaming with Candice Catnipp and NaNaNa Najahkoop against Captain Byakuya Kuchiki, Robert desperately declares his intent to defeat Byakuya and Ichigo to regain Yhwach's favor. He employs Sklaverei to amplify Grimaniel's power but is swiftly overwhelmed by Byakuya's Bankai. His resolve shatters upon realizing Yhwach views the Sternritter as expendable. Hysterically, he warns Liltotto Lamperd of their impending deaths via Auswählen just as a beam of light engulfs him, stripping away his flesh and reducing him to a skeleton. His abilities encompass Reishi manipulation, expert Hirenkyaku for high-speed movement, and precise marksmanship with his Reishi pistol; its concentrated Heilig Pfeil can kill low-level Shinigami and stagger captains. Grimaniel grants angelic wings for flight, further speed augmentation, and Reishi-formed accessories, including a star-shaped Heiligenschein. The precise nature of his Schrift "N" remains officially undisclosed.