Who is the main character in the "Grimm" television series?

Nicholas Burkhardt, played by David Giuntoli, is the main character of the NBC television series "Grimm." Nick Burkhardt, the eponymous Grimm, is a homicide detective who discovers he's a descendant of Grimms, hunters who fight supernatural forces.

Hank Griffin, played by Russell Hornsby, is Nick Burkhardt's homicide partner. Juliette Silverton, played by Bitsie Tulloch, is Nick Burkhardt's girlfriend. Other characters on the show are Monroe, Captain Sean Renard, Sergeant Drew Wu, Rosalee Calvert and Adalind Schade. The series was created by Stephen Carpenter, David Greenwalt and Jim Kouf. The pilot episode aired on Oct. 28, 2011, and season 5 premiered on Oct. 30, 2015.