Brook

Marchosias

マルコシアス
The Crimson Lord to whom Margery Daw is bound. He expresses his will through the divine vessel Grimoire, which takes the form of a book. He talks wildly, makes comments without remorse, and often teases Margery, often earning a retaliatory punch. He does genuinely care about her, however, perhaps not in the form of friendship but as a companion in battle.