Grimm is a huntress who works for the Hunters Guild. She is the deuteragonist of The Hunters Guild: Red Hood manga series. At some point in the past, Grimm was cursed by a witch. This hex transformed her into a child, and only with the Layer Clock is Grimm able to revert back to her true form temporarily. Under normal circumstances, Grimm takes on the appearance of a short girl with shoulder length blonde hair. During that time, she wears a red hood and green leather boots, with her suitcase attached to her back. When she reverts back to her original form, she appears as a tall, muscular woman, and her hair becomes significantly longer. When in her adult form, it's revealed that her boots are actually part of her pants, and that she is wearing a celeste colored shirt tucked into her pants. Additionally, it can be seen that she has a rather curvaceous figure, with ample breasts and wide hips. Grimm is a direct no-nonsense person. She prefers to act in a professional manner, not caring about any sorts of comments that people may make about her child-like appearance. Grimm sees her job strictly as a way to earn money, not thinking of herself or her fellow hunters as heroes. This extends into her perception of werewolves, as she does not believe there is anything "good" or "evil" about their eating habits. However, she has an intrinsic sense of duty, since she doesn't want people to live in fear of monsters.