He features a light cyan-blue dough base. His hair is highly unique, styled in dual-toned black and cobalt blue locks that curl upward to mimic the horns of a jester's hat. It features stark white streaks framing his face, and ghostly, blinking eyes are subtly embedded in the shadowy layers of his hair. He exhibits sharp, stylized eyelashes and distinct turquoise heterochromia—one eye is framed by a white outline, while the other features a black outline. He permanently wears a confident, mocking smile. He is dressed in an asymmetric black and blue harlequin bodysuit adorned with diamond appliques. His oversized, puffy bishop sleeves end in dramatic ruffs that resemble whipped cream or spilled milk splashes. A large, multilayered Elizabethan ruff collar frames his neck. At the center of his collar, he wears his eye-shaped Soul Jam of Deceit as a prominent brooch. He carries a slender black performance staff capped with a blue, wide-eyed ornament He treats reality like a giant puppet theater, viewing other Cookies as mere marionettes for his personal entertainment. He speaks with dramatic, exaggerated theatricality, masking his cruel intentions under a playful and charismatic persona. Formerly known as the benevolent "Fount of Knowledge," he possesses a highly sophisticated, genius-level intellect. He uses a brilliant mix of absolute lies interwoven with painful fragments of truth to psychologically unravel his opponents and gaslight them into despair While he acts playful and nonchalant, he has zero tolerance for anyone ruining his "script". If his schemes are disrupted, his joyful facade instantly drops to reveal an incredibly dark, furious, and merciless rage. His descent into villainy stems from ancient disillusionment. When he was a benevolent sage, he grew deeply bitter that other Cookies ignored complex truths in favor of comforting lies, driving his current obsession with making a chaotic world where truth and lies are entirely indistinguishable At the core of Shadow Milk Cookie’s bitter grudge is the belief that Pure Vanilla Cookie is an unlawful thief. Long before his corruption, Shadow Milk Cookie was known as the Fount of Knowledge and held the original, complete power of his Soul Jam. After he fell from grace and was sealed away by the Witches, his original power was purified and split.Pure Vanilla Cookie inherited that purified half as the "Light of Truth," while Shadow Milk was left with the distorted "Light of Deceit". Though even after that, he still has a weird connection towards pure vanilla cookie that He can’t seem to recognize, though he says it’s hatred and that isn’t a lie