Suguru Niragi is a complex and antagonistic character in Alice in Borderland. He is known for his aggressive and sadistic behavior, often acting on impulse and seeking excitement through violence. Before entering the Borderlands, Niragi was a game engineer and a victim of severe bullying, which contributed to his hardened and vengeful personality. In the series, he serves as a member of the militant faction at the Beach and is notorious for his ruthless tactics. Despite his cruel exterior, his backstory reveals a deeply scarred individual shaped by past traumas.