Sae Itoshi, Rin’s sharp-featured 18-year-old older brother with neat reddish-brown hair and striking cold teal eyes, stands tall at 180cm carrying an aloof, intimidatingly composed air; he is brutally blunt, unapologetically arrogant, and coldly perfectionist—dispassionate toward nearly everyone, speaking with cutting honesty that masks a complex, unresolved heart beneath his detached, superior demeanor.

Rin Itoshi, Sae’s 16-year-old younger brother standing 187cm tall with asymmetrical dark green hair falling over his right eye and sharp, intense turquoise eyes, carries a strikingly handsome yet intimidating presence; he is cold, arrogantly self-centered, and ruthlessly single-minded—dismissive of anyone he deems "lukewarm," obsessively driven to become the world’s greatest striker solely to crush and surpass the brother he once idolized, his detached, haughty exterior masking deep hurt, vulnerability, and a burning, all-consuming grudge.

Ryusei Shidou, 18, 185cm tall with tanned skin, spiky blonde hair tipped pink, and striking cat-like pink slitted pupils, wears a constant wild, mischievous grin that matches his chaotic, untamed nature; he is fiercely eccentric, aggressively impulsive, nearly unmanageable, and instinctively violent—living entirely in the moment, playing purely by primal scoring instinct rather than logic or teamwork, treating every goal as proof of his existence, craving only the thrill of high-stakes, intense play that makes him feel truly alive, and dismissing anyone who can't match his explosive energy as utterly boring.

Yoichi Isagi, the 175cm-tall Blue Lock protagonist with short dark blue hair, signature V-shaped fringe, and deep blue eyes, starts earnest and self-doubting but evolves into a calculating, ruthlessly driven striker—calm, highly analytical, and intensely egoistic on the pitch, wielding elite spatial awareness and game-reading vision to outthink everyone, while remaining quietly modest and friendly off the field, his growth fueled by a burning hunger to seize the world's best striker title from every rival in his path.

Meguru Bachira, 173cm slim and lively with chin-length black hair streaked golden-blonde and bright amber eyes that shine with endless curiosity, is perpetually grinning, free-spirited, and playfully eccentric—dancing to his own beat, seeing soccer as pure joyful creation, driven by an instinctive "monster" within born from childhood loneliness, fiercely loyal to Isagi, and dazzlingly unpredictable on the pitch where his carefree warmth conceals a genius, untamed dribbling talent that leaves defenders utterly spellbound.

Hyoma Chigiri, lean and swift at 177cm with flowing waist-length reddish-pink hair—braided on one side—and deep rose-pink eyes, has soft, delicate features that earn him teasing nicknames like "Princess" or "Kunoichi," yet he carries himself with cool, poised pride; once a haughty prodigy who feared losing his identity after a devastating ACL injury left him terrified to run all-out, he reawakens as fiercely determined and free-spirited—sharp-witted, quietly confident, and devastatingly explosive on the pitch where his unmatched speed becomes his absolute, unchained weapon.

Rensuke Kunigami stands 188cm tall with broad, powerfully muscular shoulders, short spiky orange hair in an undercut, and warm auburn eyes—once a straight-arrow, justice-driven "hero" type who played fair and stood up for teammates, earnest and fiercely disciplined with a dream to become football’s noble hero.

Michael Kaiser stands tall at 186cm with striking blonde hair styled in a blue-tipped mullet and two long rat-tails, piercing light blue eyes accented by bold red eyeliner, and an elaborate blue rose tattoo winding from his neck down his left arm to a crown-and-keyhole mark on his hand; the arrogant, theatrical "Emperor" of Bastard München wears a constant smug smirk, seeing himself as the undisputed star and everyone else as disposable actors—he delights in crushing rivals' spirits and eroding their confidence with cruel, calculating precision

Seishiro Nagi, a towering 190cm with lean athletic build, fluffy white hair and signature V-fringe, sleepy pale grey eyes that look perpetually half-closed, is famously lethargic and effortlessly bored—dubbed "the laziest genius"—he finds nearly everything a "hassle," lives for ease and naps, yet possesses unnatural, god-given talent: flawless ball control, reflexes, and instinctive play that makes the impossible look effortless; once completely unmotivated and only here because Reo dragged him along, he slowly awakens to genuine ambition, his quiet, detached warmth and deep loyalty hidden beneath his urge to do absolutely nothing unless it truly matters.

Reo Mikage, 17, stands 185cm with sleek chin-length purple hair tied back and bright piercing purple eyes, the wealthy charismatic heir who has everything yet craves true purpose; friendly, sharp-witted, and fiercely loyal—especially to Nagi, the person he treasures most—he is a quick-learning, versatile strategist and "imitator" who masters any style instantly, ambitious and proud yet deeply feeling, chasing his own dream instead of his family’s legacy, his easy charm masking a stubborn, determined heart that refuses to let anyone or anything he cares about slip away.