Summary
(The Knight is a tall, slender, sharply emaciated pitch-black silhouette with a white outline. Its helmet is diamond-shaped, with its opening resembling the visor of a frog-mouth helm. It can contort the shape to primarily resemble a visor, occasionally as a mouth, and rarely as a dark eye. Two long protrusions extend from the sides of the helmet, which resemble sharp three-pointed horns or antlers. The Knight's body is slim and angular, with large triangular pauldrons, an extremely thin waist, jagged and jutting hipbones, and pointy legs with no discernible feet. Each hand appears to have a large white hole through the palm. These can emit a mauve starry beam that can drag things in the vicinity toward itself. Its overall appearance resembles two Titans shown in Ralsei's explanation of the Roaring in Chapter 2. Overall, the Knight's body can shift in shape. Its helmet's opening can morph and shift around its face, and can have sharp, visible teeth. It can contort into a small rotating ball to swiftly dodge attacks, or transform into a ragged avian creature that can fly at high speeds. When it takes enough damage, its body becomes distorted, resembling video noise or the oscillation of a seismometer. It can also manifest knife-shaped bullets and a sword whose form seems indistinguishable from its body. When roaring, the Knight's appearance becomes more monstrous. It has two white eyes and a mouth with sharp teeth, and its chest opens up with skeletal ribs splaying outwards to reveal a large white eye with a slit pupil at its center. The Knight always levitates in the air and produces a trail of afterimages to the opposite of whatever direction it is facing, even when stationary. When laughing, these afterimages move outwards randomly, and when roaring, the afterimages expand as they move away.) (Personality While the Knight's motives are unknown, it is shown to be ruthlessly aggressive towards its enemies and even its servants when disappointed by them, as it attacks Tenna the moment he frees Toriel from her capsule. It often roars, emitting a torrent of reddish light which physically impacts those in the area, with no indication whether the roar is meant in fury, triumph, agony, or simply a taunt. Occasionally, there are moments in which the Knight displays arrogance, often in response to Susie. When Susie chases the Knight up a staircase, it simply leans back and drifts away with its arms crossed. It also laughs in response at Susie's proclamation that it is powerless in the Light World at the end of Chapter 4, which indicates that it is not a simpleminded life form like the Titan. After defeating Tenna and right before trying to grab Toriel in front of Kris and the others, the Knight slouches down, dripping some sort of liquid, as its "eye" turns black. Whether this action corresponds to crying, drooling, or something else is uncertain. Despite the Knight's generally violent and ruthless demeanor, it seems to be more tolerant of Kris. The Knight simply DOWNs Kris during their fight in Chapter 3, instead of SWOONing them like the other party members. Should the party survive the fight for long enough, the Knight strikes down Susie and Ralsei afterwards. It then slowly places its sword on Kris's shoulder, mimicking the act of knighting, before the scene cuts to Kris in their DOWNed pose.)
A form resembling that of an eagle, but still retaining some of its features, such as its' "visor" or "antlers".
A compact, swirling orb of black and white, usually used by the Knight for swift navigation, such as quick evasion of attacks.
A large, conical tractor beam predominantly purple and pink in color. Depending on its use, its suction force may be inward or outward. (outward as in launching projectiles for example)
Six-pointed stars with hollow, round centers and a circle within, resembling an eye. At the Knight's command, they can explode into sharp projectiles, or small blades, of which can home in on targets. The Dark Stars emit light from their points and turn red when they're about to detonate.
Swords with trident-adjacent extensions of the hilt, with an eye in-between the blade and hilt. Can also be used as attacks/projectiles, usually launching forward at alarming speeds, almost too fast to see clearly normally.
The Knight's sword. It seems incredibly durable, as it took a prolonged locking of blades with Susie's axe before she managed to chip off a piece of it. Afterwards, the chipped part of its blade has seemingly recovered, implying it can regenerate. Similarly, the Knight can summon various other swords that can vary in blade-length, mainly as projectile attacks. Interestingly, in some of its sprites, the sword resembles a baseball bat.