Gin Gagamaru stands 191 cm tall with long black hair often secured in a bun and prominent large black eyes. Three scars mark his ear, attributed to a past bear encounter. Hailing from Wakayama Prefecture, he attended Yasei High School and began playing soccer at age twelve, citing Gareth Bale as his favorite player. His demeanor blends nonchalance and confidence, highlighted by eccentric habits like eating with his fingers and using ivy as a hair tie. He cherishes nature and adheres to a "Great Nature Form" philosophy, prioritizing self-acceptance and instinctual harmony. Teammates view him as reliable and adaptable, accepting positional shifts without protest to ensure playtime. Entering Blue Lock as Team Z’s forward (#6 jersey) during the First Selection, he specialized in close-quarter plays and goal-poaching, leveraging reflexes and flexibility to score from difficult angles. His physical traits—a "Springlike Body" granting exceptional horizontal propulsion and limb control, plus "Explosive Reaction" speed for last-second interventions—enabled advanced techniques like the Scorpion Kick. By the Third Selection’s end, coaches transitioned him to goalkeeping due to his physique and reflexes, a shift he accepted immediately. Key development moments include attempting a headed rebound against Team Y, executing a decisive Scorpion Kick versus Team W, and igniting Team Z’s counterattack after a save against Team V. Ranked 88th post-First Selection, he partnered with Raichi and Wanima in the Second Selection. For the Third Selection, he volunteered for Team C under Yukimiya and Nagi, defensively intercepting an acrobatic pass meant for Shidou. Selected as Blue Lock Eleven’s starting goalkeeper (#1 jersey) for the Japan U-20 match, he collaborated with defenders like Aryu for critical saves against Rin Itoshi and Shidou Ryusei. In the Neo Egoist League, he represents Bastard München as goalkeeper (#99), making notable stops against Manshine City—deflecting an "awakened" Shidou Baro shot and halting Reo’s powerful strike using "Ultra Reflex" and "Bear Claw Deflection" under duress. His hobbies include reading manga (favorites: *Naruto*, *Dorohedoro*) and meditating in nature. He avoids convenience store food over preservative concerns, favors wild boar meat, listens to Southern All Stars music, and opposes animal cruelty, reflecting his nature-centric values.