A large part of Brooklyn Nine-Nine’s success is owed to its cast members, most of whom proved to be pretty wholesome in the show and in real life, too. From Andy Samberg and Melissa Fumero to Terry Crews and Stephanie Beatriz, the show's major stars added personality to the hilarious misadventures of the cops and detectives of the fictional 99th Precinct while also adding the right amount of depth in some of the show’s more emotional scenes. Like any long-running sitcom, Brooklyn Nine-Nine also had its fair share of cameos, including those from Nathan Fillion and Neil deGrasse Tyson.
https://screenrant.com/brooklyn-99-cast-real-life-partners-appearances/