CHARACTERS OF GRIMM David GiuntoliasNick Burkhardt, theeponymousGrimm. Nick is a Homicidedetective, whose Aunt Marie (Kate Burton) tells him that he is descended from a line of hunters, calledGrimms, who fight supernatural forces. Even before his abilities manifested, Nick had an exceptional ability to make quick and accurate deductions about the motivations and pasts of individuals, which has now expressed itself as his ability to perceive aspects of the supernatural that nobody else can see. He temporarily lost his grimm power after the event of season 3 finale but regained them in season 4 episode "Highway of Tears". He later learns that Adalind Schade is carrying his child, which was revealed to be a boy. Russell HornsbyasHank Griffin, Nick's Homicide partner, who is not aware that Nick is aGrimmuntil Episode 3 of Season 2. He is somewhat sarcastic at times and has gone through at least four marriages by the time the series begins; nevertheless, he is Nick's best friend in the human world. Bitsie TullochasJuliette Silverton, Nick's girlfriend, aveterinarian. She was originally unaware of Nick's duties as aGrimmuntil he tells her in the finale of Season 1. However, by Season 2, a magically induced amnesia removes Nick from her memory altogether. Although Nick's Aunt Marie suggested that he leave Juliette for her safety, Nick decided to stay with her. He postponed his original plans to propose to her while he explores his new life as aGrimm. She eventually regained her memories and learned the truth of Nick's abilities. In Season 4, a series of events and dangerous spells results in Juliette becoming an exceptionally powerful Hexenbiest, and her personality becomes drastically more antagonistic and less empathetic as a result. Silas Weir MitchellasMonroe, a creature called aWieder Blutbad[12]who aids Nick with his cases. He is also a good friend of Nick's, even though he has some issues withGrimmssince aGrimmkilled his grandfather (but he acknowledges that the ancestor deserved it for butchering a village). Monroe is knowledgeable about many of the wesen that Nick goes up against, serving as Nick's direct source of insight and information into the supernatural community whenever the second-hand knowledge that Nick acquires from his ancestors' books is inadequate, as well as assisting Nick when cases require Nick to rely on someone who knows about the threats he faces. He also helps Nick make contact with creatures that would avoid Nick due to his status as aGrimm. Sasha RoizasCaptain Sean Renard, a fluent francophone; Nick's adept and efficient superior. Renard happens to be a magical creature calledZauberbiest(his mother is aHexenbiest, a witch) and a bastard of a royal lineage, a fact of which Nick was not aware until the beginning of Season Two. He is the father of Diana, daughter of Adalind Schade. Reggie LeeasSergeant Drew Wu, a police sergeant who works with Nick and Hank; he tends to do the "grunt work" for them, running down facts and information. In Episode 8 of Season 4, Nick was forced to tell him everything about theWesenworld after he started losing his mind due to all the "Wesen" involved murder cases. Bree TurnerasRosalee Calvert(Recurring season 1; Regular season 2present), a fox-like creature calledFuchsbauwho takes over her brother'sWesenspice shop after he is murdered. Rosalee assists Nick and Monroe in their efforts by providing more information and remedies to supernatural problems. She married Monroe in the Season 3 finale. Claire CoffeeasAdalind Schade(Recurring season 1; Regular season 2present), a witch-like wesen called aHexenbiestwho was working for Renard and who after ingesting Nick's blood, became a normal human being. Seeking revenge, she poisoned Juliette to forget all memories of Nick and started colluding with Renard's half-brother, Eric, eventually regaining her powers through agonizing rituals. She had a baby girl, Diana Schade-Renard with Renard that has unique powers. She is currently pregnant with Nick's child, which was revealed to be a boy.