List of Brooklyn Nine-Nine characters

Andy Samberg portrays Jacob "Jake" Jeffrey Peralta, the series's protagonist. At the beginning of the series, Peralta is portrayed as an exceptional detective despite his immaturity, engaging in pranks and making childish jokes at the expense of his colleagues. He is fun-loving, sarcastic, and is often motivated by his emotions. Despite his goofiness, Peralta is smart, perceptive, and quick thinking, and as such has the best arrest rate in the precinct. In the pilot, Terry Jeffords explains to Captain Holt that Peralta is his best detective.

Jake's father, Roger Peralta, an airline pilot, abandoned the family during Jake's childhood. Jake initially refuses to celebrate Thanksgiving, since he associates the holiday with his father's absence. After Jake calls his father out for his irresponsible parenting in "Captain Peralta", the two slowly began to mend their relationship. In the season 5 episode "Two Turkeys", Jake finds out he has three half-sisters, along with an unknown number of half-brothers. He meets one of his half-sisters, Kate, in the episode "DFW". He mentions being half Jewish and half Italian in the show.

Jake began his career as a patrol officer with the 74th Precinct and was partnered with Stevie Schillens; the two nicknamed themselves the "Beatsie Boys". He was promoted to detective with the 99th Precinct in 2005. He has a strong emotional tie to his muscle car, a 1967 Ford Mustang, which he buys outright on his first day as a cop. He often quotes and makes references to ''Die Hard'' and the ''Teenage Mutant Ninja Turtles''. In "The Bet", it is revealed that Jake is Jewish.

Jake's best friend is co-worker Charles Boyle, who encourages his eventual romance with Amy Santiago. Jake and Gina are childhood friends, while he and Rosa Diaz were classmates at the police academy.

While Jake initially struggles with Captain Holt's strict management style, he matures under Holt's supervision and comes to see the captain as a father figure. In "The Oolong Slayer", Jake achieves his lifelong dream to catch a serial killer, but gives credit for the arrest to the Chief of Brooklyn Detectives in exchange for Holt's transfer back to the 99th Precinct. In season five, Holt puts his career at risk by negotiating with mobster Seamus Murphy in order to free Jake and Rosa from prison. The two also work closely together to bring down Jimmy Figgis after being forced to go into witness protection in Florida.

Peralta continuously pranks and teases his partner Amy Santiago, masking his secret romantic feelings for her. Peralta confessed his feelings to her in "Charges and Specs" before going undercover for a mafia operation. His romantic feelings for her developed further throughout season two and they shared their first kiss in the season finale, "Johnny and Dora". Jake and Amy start dating in "New Captain" and decided to move in together in "Greg and Larry", but don't make it official until season four's "The Fugitive". Jake proposed to Amy at the end of their annual Halloween heist in HalloVeen and the two are later married by Captain Holt in the season five finale. In season 7, Amy became pregnant with their child. Their son McClane "Mac" Peralta-Santiago (who was named after John McClane from ''Die Hard'') is born in the season 7 finale.

In the series finale, with Amy's new position taking up more of her time and making their parenting schedule difficult, Jake decides to quit his job to become a stay-at-home dad, not wanting his son to grow up without a father as he did. Jake is the only character, along with Captain Holt, to appear in every episode of the series. Provided by Wikipedia