From Grimm wiki
Nick Burkhardt
Nick Burkhardt is a Portland homicide detective who discovers his ancestral heritage as a Grimm, a guardian tasked with protecting humanity from supernatural creatures known as Wesen.
Background and Discovery
Nick Burkhardt initially serves as a dedicated detective for the Portland Police Bureau alongside his partner, Hank Griffin. His life undergoes a dramatic transformation when he begins to see the true faces of Wesen, revealing his identity as a Grimm. This lineage grants him unique abilities to perceive supernatural entities that remain hidden from ordinary humans, forcing him to balance his professional duties with his secret role in maintaining the balance between the human and Wesen worlds.
Alliances and Conflict
Throughout his journey, Nick relies on a close-knit circle of allies, most notably the Blutbad Monroe and his wife Rosalee Calvert, who provide him with essential knowledge regarding Wesen lore. His complex relationships with figures such as Adalind Schade, Captain Sean Renard, and his colleague Sgt. Wu often blur the lines between friend and foe. His personal life is also profoundly impacted by his connection to Juliette Silverton, whose own experiences with the supernatural world significantly alter their shared history.