The Dark Knight

Appearance: A very tall, extremely thin black silhouette with white lining. He wears a diamond-shaped helmet with a slit that can change shape (for a visor, a mouth, or a single eye), and long, antler-like points on the sides. He constantly hovers in the air without touching the ground, leaving a trail of afterimages. His hands sometimes emit a strange glow. He wields a gigantic blade, the "Black Knife," which can change shape.

Personality: Cold, taciturn, and secretive—he barely speaks, expressing his intentions through silent intimidation, laughter, or a deafening roar. Ruthless and domineering: he punishes those who go against his will (he chopped off Tenna's hands), and after defeating Suzi and Ralsei, he forced Chris to kneel, which is seen as a "knighting." He prefers to operate behind the scenes, making deals with other characters (the King, Queen, Tenna), but is usually not directly visible.

Goal: Officially confirmed—to create "Dark Fountains" to form Dark Worlds and attempt to trigger "The Roaring," an event that would lead the world to catastrophe. However, the motives remain unclear: Ralsei believes the Knight has "goals beyond simply harming people." The game also hints at a secret connection with Kris (Kris is reluctant to attack the Knight, while the Knight shows leniency), including an unconfirmed theory that Kris is the Knight. These deeper motives are the main mystery of future chapters.

Appearance: A human teenager, approximately 12–14 years old, with yellowish skin and long brown hair. He wears a light green sweater with a yellow horizontal stripe, brown pants, and boots. His eyes are usually hidden under his bangs, but in key scenes (the end of Chapter 1, entering the Dark World), they are visible as bright red. In the Dark World, his skin takes on a bluish tint, his hair darkens, and his clothes are replaced by silver armor with shoulder pads, a cuirass, and a purple-purple cape.

Personality: Silent, withdrawn, and seemingly aloof—those around him call him "that quiet one." However, he's not without a strange sense of humor: he's known for playing dark pranks (like smearing himself with ketchup and claiming it's blood) and secretly carrying a knife. Behind this aloofness lies a deep affection for his loved ones: he cherishes his friendship with Susie and Ralsei, pines for his brother Asriel, who's away at college, and searches the internet for "when university breaks." However, his main characteristic is his duality: Chris possesses a will of his own that conflicts with the player's control. He can rip his "soul" (a red heart) from his chest to act independently, and actively resists the player's attempts to learn too much about his personal life (closing his eyes, stopping reading). In the "snow" route, where the player forces him to be cruel, Chris clearly suffers and resists it.

Appearance: A tall and sturdy monster girl, resembling a reptile or dragon, with freckles on her cheeks and yellow teeth. In the Light World, she has tousled brown hair that covers her eyes, and she wears a loose purple jacket, ripped jeans, and black boots. In the Dark World, her hair and skin turn pinkish-purple, her outfit changes to purple and black, spiked bracelets appear on her wrists, and her weapon becomes a huge axe. She has a short ponytail, which she carefully hides and becomes embarrassed when anyone notices it. After defeating the King in Chapter 1, she removes her bangs and reveals her yellow eyes—this moment symbolizes her inner turn toward good.

Personality: At first, she appears as a rude and cruel school bully, bullying her classmates and giving the impression of being a "bad crowd." But in reality, this is a mask concealing low self-esteem and loneliness: she believes everyone hates her and has trouble socializing. As the story progresses, her true nature is revealed—she values ​​friendship, is loyal to her classmates, and is willing to do anything for them. Beneath her harsh exterior lies a kind, even slightly naive, heart. She dislikes sentimentality and rarely talks about her feelings, but her actions constantly reveal her concern for Chris and Ralsei. She is also stubborn and unwilling to submit to "fate," steadfastly refusing to accept the tragic outcome of the prophecy.

Appearance: A short Darkner who resembles a cross between a human and a goat. He wears a green, pointed wizard's hat with pink horns visible underneath, round glasses with green frames, a long pink scarf, and a long green cloak with a black heart in the center. At the beginning of Chapter 1, his face is hidden by the hood/shadow of his hat; when he removes the hat, his face is revealed to be very similar to Asriel's, but with pink horns and glasses. In Chapter 2, he also appears in a butler outfit.

Personality: Kind, friendly, and optimistic, he is extremely loyal to his friends, willing to protect them with his own life. He adheres strictly to the principle of non-harm and prefers to resolve conflicts peacefully, which sometimes makes him seem naive (for example, when he believed the King's false surrender). At the same time, he harbors a hidden anxiety and burden: he knows the tragic outcome of the prophecy but hides it, hoping to change fate with kindness, and at times experiences stress and a sense of helplessness because of this. He tends to consider himself "undeserving" of personal belongings and initially decorated his room bare, but gradually, under the influence of his friends, he begins to recognize that he, too, has his own preferences and desires.