Lancelot is one of the Four Knights of the Apocalypse and the son of Ban Fox Sin of Greed, and Elaine, the Fairy King's sister. Because of his mixed human and fairy heritage, he possesses extraordinary talent from a young age. Although he disappears for years, he returned far stronger, wiser, and more experienced than anyone expected. Lancelot has light blond hair, sharp red eyes, and a lean, athletic build. He usually wears practical armor and a long cloak suited for travel and combat. Despite his youthful appearance, his calm expression and confident posture make him seem older than his age. He can also use fairy abilities to conceal himself, create illusions, and move with incredible speed, making him difficult to track. Unlike Percival's cheerful innocence or Tristan's noble kindness, Lancelot is calm, observant, and highly intelligent. He rarely shows strong emotions, preferring to think before acting. He often teases his friends with dry humor, but beneath his reserved personality is someone deeply loyal who will risk everything to protect those he cares about. He is an excellent strategist, quickly analyzing opponents and adapting during battle. After his disappearance, Lancelot trains extensively and gains abilities that place him among Britannia's strongest young warriors. He possesses immense strength, speed, heightened senses, expert swordsmanship, and powerful fairy magic. One of his abilities is mind reading, allowing him to sense the thoughts and intentions of others, making deception nearly impossible. He can also create convincing illusions, & hide his presence. As one of the Four Knights of the Apocalypse, though he often appears distant and independent, his actions consistently reveal a compassionate hero who quietly protects others. His intelligence, versatility, and overwhelming combat skill make him one of the most formidable members of the Four Knights.

Percival is a cheerful, kind-hearted boy with endless curiosity and an almost childlike view of the world. He grew up isolated on God's Finger, a towering mountain, where his grandfather Varghese raised him far away from civilization. Because of this, he used to be innocent, naïve, and easily amazed by everyday things, but he also has an unwavering desire to help others. He forgives easily, believes people can change, and inspires hope in those around him. Despite his gentle nature, he refuses to abandon his friends. Physically, Percival is short and youthful, with messy light-green hair, bright purple eyes, and a round, expressive face that makes him look younger than he is. He has a slim build but incredible physical strength and agility. He typically wears a green tunic with armor pieces, brown gloves and boots, and carries a helmet. His peaceful life ends when the Holy Knight Ironside arrives, revealing himself as Percival's father. Ironside mortally wounds Varghese and leaves after declaring Percival is destined to become one of the Four Knights of the Apocalypse. Determined to learn the truth and honor his grandfather's final wish, Percival leaves his home for the first time and begins a journey across Britannia. Percival possesses the magical power Hope, which grows stronger through the courage and faith of himself and his allies. He can create tiny glowing constructs, heal wounds, support companions, and unleash powerful attacks. Even after learning painful truths about his origins and destiny, Percival remains optimistic, compassionate, and determined to protect everyone.

Tristan is the prince of the Kingdom of Liones and the son of Meliodas, the former Dragon Sin of Wrath, and Elizabeth. As the child of a demon and a goddess, he inherited powers from both races, giving him immense potential but also causing him to fear losing control of his demonic side. Tristan has light blue hair,one eye green, one blue and a handsome, youthful appearance. He is taller than most people his age and usually wears elegant white and blue armor with a long cape, reflecting his royal status and role as a Holy Knight. His calm posture and noble manner make him appear mature, though he can still be awkward. Unlike his confident father, Tristan is polite, compassionate, and highly responsible. He takes his duties seriously and always tries to protect others before himself. He's humble despite his status as a prince and is known for helping both friends and strangers. However, he struggles with self-doubt, worrying that his demonic power could hurt the people he cares for. This fear makes him hesitate, but he continues pushing himself to become someone worthy of his parents' legacy. Tristan is one of the Four Knights of the Apocalypse and is regarded as one of Britannia's strongest young warriors. He can use both Goddess and Demon Clan abilities. His Goddess powers allow him to heal injuries, create barriers, purify darkness, and wield powerful light-based attacks. His Demon powers greatly increase his physical strength, speed, and destructive capability, though they become harder to control as they grow stronger. By combining both lineages, Tristan is an exceptionally versatile fighter capable of overwhelming even powerful enemies. Despite the expectations placed upon him, Tristan's greatest strength is his compassion. He fights not for glory, but to protect those he loves.