Commodore Brannew operates as a Marine officer at Marine Headquarters, specializing in bounty assignments and intelligence oversight. His involvement spans multiple arcs and the non-canon film "One Piece: Stampede". First appearing in the Loguetown Arc as a lieutenant commander, Brannew convened urgent meetings to address the rising threat of Monkey D. Luffy following the defeats of pirates Buggy, Don Krieg, and Arlong. Citing the severity of Luffy's actions, he proposed an initial bounty of 30,000,000 berries to eliminate the threat early. During the Summit War of Marineford, Brannew defended Marine Headquarters against the Whitebeard Pirates, engaging in sword combat and surviving the conflict despite injuries. Post-war, he informed Fleet Admiral Sengoku of the mass Impel Down breakout, specifically noting the escape of Level 6 prisoners and the World Government's decision to conceal this to preserve public trust. He later reported to Sengoku on Luffy's infiltration of Marineford, detailing how Luffy, Jinbe, and Silvers Rayleigh rang the Ox Bell 16 times and paid tribute to Portgas D. Ace. Brannew interpreted this act as a declaration of war against the Marines, emphasizing the humiliation caused by Luffy's escape and subsequent media coverage. After the timeskip, promoted to commodore, Brannew attended meetings addressing critical events: former Admiral Zephyr's non-canon attack on Endpoint and Donquixote Doflamingo's resignation from the Seven Warlords. Regarding the latter, he expressed concern over the power balance destabilization due to Trafalgar Law's alliance with Luffy. In the non-canon "One Piece: Stampede", he briefed Vice Admirals at Marine Headquarters on Douglas Bullet and the escalating situation on Delta Island. During the Wano Country Arc, he participated in a strategic meeting after the abolishment of the Seven Warlords system, presenting bounty information for the Four Emperors and Gol D. Roger to contextualize threats amid the Big Mom and Kaidou alliance. In the Egghead Arc, Brannew discussed the Cross Guild's formation and its marine-hunting bounty system, presenting new bounties for Buggy, Crocodile, and Dracule Mihawk. He explained how the group's actions garnered external organizational support. Later, he showcased visibly damaged battleships at G1's scrapyard, attributing the destruction to training by Monkey D. Garp and Kuzan, executed without Haki or Devil Fruit abilities. Brannew possesses a tall stature, tanned skin, dark-green curly hair, and upward-pointing sideburns. His eyes remain obscured by sunglasses. Post-timeskip, he added earrings and adjusted his attire to include patterned shirts under his Marine coat. His personality reflects a staunch commitment to Marine justice and authority. He advocates preemptive measures against emerging threats and maintains professionalism in intelligence reporting. He values the Marines' reputation, reacting strongly to perceived humiliations like Luffy's Marineford infiltration.