Millennium Earl

千年伯爵

The story's primary antagonist, also known as "the Earl of Millennium." He deceives individuals with deceased relatives and friends into creating Demons (Akuma). An ancient sorcerer, he intends to guide the world toward its destruction. At some point in the past, he established an alliance with the Noah Clan, who address him as "Duke Millennium" (with the exception of Road, who calls him Millenie). Hoshino states that she modeled the Earl of Millennium after a legendary alchemist or preacher (most likely the Count of St Germain or Nicolas Flamel, though in many respects he also recalls Dorian Gray, potentially referenced in "Dorian Grey man" and thus "D.Gray-Man," as adapted in the film The League of Extraordinary Gentlemen), whose legend even suggests he might still be alive somewhere.
Visually, the Earl resembles a grotesque caricature of a Victorian gentleman—a rotund figure clad in a cape and top hat, featuring an enormous, fixed grin that persists even while he speaks or eats, and eyes permanently concealed behind a pair of pince-nez spectacles. In the manga, nearly every line of his dialogue concludes with a heart. In the anime, he consistently employs polite Japanese. Throughout the narrative, he exhibits two distinct personalities. The first is his usual cheerful, friendly, and happy demeanor, akin to that of a benevolent old uncle. Among the Noah, he is considered a family member and is notably playful and affectionate toward Road. His alternate personality is defined by sheer, sadistic malice, allowing him to gleefully toy with people's lives.
He dons a different hat during each encounter, each adorned with a unique decoration. In a gag comic featured in Volume 2 of the manga, he is depicted removing his hat to reveal another set of ears. His primary method of combat involves his umbrella, Lero. He has also demonstrated the ability to generate massive explosions of dark energy. Additionally, the Earl can summon a large black sword that serves as the opposite of Allen's Crown Clown sword.