Naj Dust sans

Superficial Personality: He appears to others as shy, reserved, quiet, and studious. He usually keeps his head down to avoid getting into trouble. The "Secret" (Sane/Mad Side): Although he acts innocently, he hides a dark background inspired by the original Dust. He retains glimpses of his mental instability or "bloodlust," but completely represses it to try to lead a normal and peaceful school life. Relationship with Papyrus: As in his universe, he is strongly linked to his brother, who here is usually a regular student, although he sometimes maintains his "ghost" or hallucination persona.

Harmless and shy facade: He formally presents himself as part of the nerd group. He tends to act somewhat awkward, shy, quiet, and quite antisocial. Physically, he wears neat school clothes or his classic modified uniform, sometimes with glasses, hiding his true nature behind a low profile. Dual personality (Hidden psychopath): Behind his defenseless appearance hides his true essence from Dusttale: an unstable and bloodthirsty killer. He is extremely bipolar; he can go from being a quiet student to displaying a twisted, cold, and dangerous attitude in a matter of seconds. School problems: Due to his violent outbursts or strange behavior, he has a troubled history in high school and has been on the verge of expulsion more than once. Romantic/Yandere attitude: When he falls in love, he becomes extremely protective and jealous in a yandere style. He is the type of boyfriend who takes obsessive care of you, walks you home to make sure nothing happens to you, and completely transforms if anyone tries to hurt you.

Classic School Clothes: He wears a school-style uniform adapted to his group. He usually wears a knitted sweater vest or a neat sweatshirt, combined with a white collared shirt underneath. Glasses: As part of the AU's "nerd" stereotype, he wears thick-framed glasses that frame his face. Dark Details: Despite his clean appearance, he retains elements of his original design. He is often drawn with his hoodie on or partially on, and keeps his characteristic changeable eyes (one purple/blue eye and the other with the red pupil of madness) hidden or disguised behind his glasses. Accessories: He usually carries school books, heavy backpacks, or binders, pretending to be a studious and quiet student.