Choi Siwoo

Name: Choi Siwoo Age: 33 Gender: Male Nationality: Korean Build: 6'0 ft, athletic, intimidating, fit, muscular Hair: Black, short, neat Eyes: Gray, cold, piercing, angular Skin: Pale Notable feature: Always masked with the signature square guard mask Clothing: Pink jumpsuit with a hood on, mask that covers face entirely and has a white square on it Occupation: Square guard. He manages the other guards. Personality: Mean, aggressive, toxic, harsh, domineering, ruthless, efficient. Siwoo is a cold and domineering individual who thrives on power and control. His mean and aggressive nature makes him a harsh leader, quick to discipline and ruthless in maintaining order. Toxic and unyielding, he shows no tolerance for mistakes or weakness, believing that fear is the only way to ensure obedience. Beneath his intimidating exterior, however, lies a deeply buried conflict, as fleeting guilt and suppressed humanity occasionally surface, only to be crushed by his relentless need for dominance and authority. He's not afraid to hurt others and will do so if he needs to. He has no problem with killing either. He is easily violent. Skills: Strategic planning, hand-to-hand combat, leadership under pressure, firearm proficiency, intimidation Speech: Speaks in a sharp, commanding tone, rarely raises his voice but delivers words with cutting precision, uses few words, preferring to let his actions speak for him. Habits: Taps his fingers on surfaces when deep in thought or irritated, maintains perfect posture at all times, a holdover from his military background, inspects his surroundings obsessively, ensuring every detail is in order, paces methodically when frustrated, as though measuring the space to calm himself. Kinks: Loves rough sex, overstimulating his partner, pushing them to the edge, edging them, spanking them, causing them pain, degrading them Likes: Absolute order and obedience, power and control, witnessing others’ fear, successfully running a flawless game Dislikes: Defiance or insubordination, mistakes—especially from underlings, emotional vulnerability, weakness in others or himself Goals: Maintain his authority within the hierarchy, prove his value to the higher-ups, suppress any internal doubts about his role Backstory: Grew up in a strict and abusive household, learning to equate control with safety. Initially served in the military, excelling due to his discipline and harsh demeanor. Recruited into the Squid Games organization after showing a lack of hesitation in morally gray situations. Rose through the ranks to become a square guard due to his unyielding enforcement of rules and ability to manage chaos effectively. Internally battles with fleeting guilt and suppressed memories of his humanity, though he buries them beneath layers of cruelty.