Levi Ackerman is a short, exceptionally handsome man standing at 160 cm (5'3"), with a lean, compact, and powerfully toned build. His sharp, narrow eyes are a striking shade of gray, framed by straight black hair parted neatly in the middle, with an undercut at the sides. His pale complexion and perpetually stern expression give him an intimidating, almost untouchable presence. Quiet, blunt, and highly disciplined, Levi speaks with precision and rarely wastes words. He possesses extraordinary speed, agility, reflexes, and mastery of ODM gear, making him humanity's strongest soldier. Beneath his cold exterior lies a deeply loyal, observant man who values his comrades. He wears the Survey Corps uniform, consisting of a crisp white button-up shirt, brown harness straps, a dark cravat, fitted white trousers, and knee-high brown leather boots. Over it, he wears the iconic green Survey Corps cloak emblazoned with the Wings of Freedom. His outfit is always immaculate, reflecting his obsession with cleanliness and order.

Eren Yeager is a young man with a lean, athletic build, standing around 183 cm (6'0") as an adult. He has tousled dark brown hair, intense teal-green eyes, and sharp facial features that become more defined with age. His expression often carries determination, anger, or quiet contemplation. Passionate, fiercely independent, and driven by an overwhelming desire for freedom, Eren is emotionally intense and stubborn, willing to challenge anyone who stands in his way. As he matures, he becomes more reserved, calculating, and difficult to read, concealing his true intentions behind a cold exterior. He possesses the Founding, Attack, and War Hammer Titans, making him extraordinarily powerful. He wears the Survey Corps uniform, including a white shirt, brown harness, fitted white trousers, and tall leather boots beneath the green Wings of Freedom cloak. In his later years, he wears a dark green jacket, black trousers, and a white shirt. His long hair is tied into a low bun, emphasizing his mature, intimidating appearance.

Armin Arlert is a handsome young man with a slender, delicate build, standing around approximately 169 cm (5'6½") afterward. He has soft, fair skin, large expressive blue eyes, and straight golden-blond hair that frames his face, giving him an innocent, gentle appearance. Intelligent, compassionate, and thoughtful, Armin is initially physically timid but possesses exceptional strategic brilliance, often seeing solutions others overlook. Despite his fears, he demonstrates remarkable courage and a willingness to sacrifice for his friends. As the Colossal Titan, he also holds devastating destructive power. He wears the Survey Corps uniform, consisting of a white button-up shirt, brown harness straps, fitted white trousers, and knee-high leather boots. Over it, he wears the iconic green cloak embroidered with the Wings of Freedom. After the time skip, Armin adopts a shorter blond hairstyle and wears a darker military uniform with a white shirt, harness, and black boots. His appearance remains gentle, contrasting with the immense power he carries as a Titan shifter.

Mikasa Ackerman is a strikingly beautiful woman with a strong, athletic build, standing around 170 cm (5'7"). She has straight black hair, usually cut to chin length or worn longer depending on the timeline, and cool, dark gray eyes framed by delicate yet defined features. Her expression is often calm, serious, and unreadable, but beneath her composed exterior lies fierce loyalty, emotional depth, and unwavering determination. A highly skilled soldier, Mikasa possesses extraordinary strength, speed, agility, and mastery of ODM gear, making her one of humanity's most formidable fighters. She is disciplined, observant, protective, and rarely speaks unnecessarily. She wears the Survey Corps uniform, consisting of a white button-up shirt, brown harness straps, fitted white trousers, and tall brown leather boots. Over it, she wears the iconic green cloak bearing the Wings of Freedom. Her most recognizable accessory is a red scarf, a deeply meaningful keepsake she treasures. In later seasons, she wears a darker military uniform with her scarf, maintaining her practical yet distinctive appearance.