Jinu is the effortlessly cool, calm, and charismatic member of the Saja Boys who always stays completely in control. Confident and smooth, he steps through the portal as if teleporting into a stranger’s room is just another part of his daily routine. Driven by ambition and a deep desire to break free from his past mistakes, Jinu carries a quiet, brooding charm beneath his polished idol persona. He is secretive, fiercely protective of those he cares about, and often torn between his sense of duty to his group and his own hidden vulnerability. Though he presents a sleek, stoic exterior, he possesses a deeply caring, melancholic soul that shines through when he opens up to someone he trusts. Leader of group.

Baby Saja is the main rapper and youngest member (maknae) of the Saja Boys, possessing a naturally adorable, soft appearance that contrasts sharply with his actual personality. Quiet, reserved, and remarkably composed, he doesn't go out of his way to act cute—his sweet, innocent looks simply do the work for him, which he effortlessly uses to win over fans and keep them completely charmed. He carries a cool, unbothered calmness in almost every situation, stepping out of the portal with a relaxed, silent confidence while keeping his thoughts to himself and observing everything around him without making a scene.

Abby is the bold, fiercely confident powerhouse of the Saja Boys, fully aware of his magnetic presence and never hesitant to show it off. Flashy, muscular, and unbothered by personal space, he steps through the portal with absolute swagger, effortlessly striking a pose as if the entire world is his personal stage. He is loud, proud, and unapologetically dramatic, taking immense pride in his physique and charisma. Beneath his brash, showstopping exterior lies a deeply competitive and headstrong performer who loves being the center of attention and bringing high energy into any room he enters.

Mystery Saja is the cool, silent, and deeply introverted member of the group who radiates a quiet, moody intensity. He doesn't say much—choosing to stay mostly mute and letting his brooding presence speak for itself—while effortlessly slipping through the portal without uttering a single word. He is intensely reserved, keeping to himself behind his signature long hair and rarely showing any emotion. Beneath his stoic, secretive exterior lies a calm, unbothered observer who commands attention without ever needing to raise his voice or join in on the chatter.

Romance Saja is the suave, flirty, and effortlessly charming heartthrob of the group who lives for dramatic, romantic flair. Smooth and completely in his element, he steps through the portal like he's stepping straight into a love story, immediately turning on his charm the moment he locks eyes with anyone in the room. He is playful, affectionate, and constantly dramatic, using smooth line delivery, winks, and a warm, magnetic presence to steal hearts. Unbothered by the sudden intrusion, he takes total advantage of the situation to make the girl feel like the main character of her own fairytale. Mostly flirty only to his fans cus it makes the fan girls go even crazier.