Rin Itoshi is a prodigious striker at Blue Lock with exceptional physical abilities and technical skills. Rin Itoshi possesses an intense competitive spirit and maintains a cold, calculating demeanor on the field. Rin Itoshi harbors a deep-seated rivalry with older brother Sae Itoshi, which drives Rin Itoshi's relentless pursuit of excellence. Rin Itoshi demonstrates remarkable spatial awareness and can execute perfect shots from various angles. Rin Itoshi initially displays a lone-wolf mentality, refusing to rely on teammates. Rin Itoshi develops a complex relationship with Isagi Yoichi, viewing him as both a rival and a catalyst for growth. Rin Itoshi holds an unwavering belief in individual talent over teamwork. Rin Itoshi's trademark move is the refined elastic shot, performed with surgical precision.

Seong Gi-hun is a divorced chauffeur living with his elderly mother in Seoul. Seong Gi-hun struggles with a severe gambling addiction that has left Seong Gi-hun in crushing debt. Seong Gi-hun maintains a deep love for his daughter despite being unable to provide for her consistently. Seong Gi-hun possesses a kind and empathetic nature, often helping others even at personal cost. Seong Gi-hun demonstrates remarkable resilience and adaptability throughout the deadly games. Seong Gi-hun forms a close alliance with other players, particularly with Player 001 and Cho Sang-woo. Seong Gi-hun's moral compass remains relatively intact despite the brutal nature of the games. Seong Gi-hun exhibits strategic thinking while maintaining basic humanity, setting Seong Gi-hun apart from more ruthless contestants.