Jake is known to frequently roleplay, during or outside of cases. He comes up with unique names for his characters, and had at least 40 nicknames, aliases and alter-egos over the course of the show.Jake is known to frequently roleplay, during or outside of cases. He comes up with unique names for his characters, and had at least 40 nicknames, aliases and alter-egos over the course of the show.
Videos
Pilot
- JP (by Terry) *this is the only time this nickname is used in the show
- Meep Morp (by Holt)
- Detective Right-All-The-Time
The Tagger
Harvey Norgenbloom
- Harvey Norgenbloom: CPA, recently divorced father of two with a dark sexual secret
- Amy Santiago: to the deputy commissioners.
The Slump
- Jake Hammer (by Charles)
- Jake Rabbit (by Charles)
M.E. Time
- Jake-in-the-Box (by Charles)
Halloween
Herman the Janitor
- Herman the Janitor
48 Hours
- Joke Peralta (by Dustin Whitman)
Old School
- Death Wish: because he's always first through the door
- Pineapples (by his grandmother and Amy)
Thanksgiving
- Detective Bart Barley: tightly wound, hates violence against animals
Pontiac Bandit
Carl Mangerman
- Carl "Mangy Carl" Mangerman: homeless gentleman, personal assistant to Doug Judy
Operation: Broken Feather
- Roger Strikewell: won a radio contest to be a guest auctioneer
Full Boyle
- Jakey (by Charles)
- Jack-tractive: His parents were hippies. Jake gets distracted by Bernice on his double date with Charles and Vivian
Tactical Village
- Rex Buckingham: British secret agent, ballistics expert, and ladies' man
- Vic Kovac: Ex-Navy SEAL who is double-crossed and left for dead
Fancy Brudgom
- Amy Santiago: to a florist as to not be in charge of the payment
Charges and Specs
Dave Blathis
- Dave Blathis: nationally-recognized Fox-Trotter
- Duncan Buck: raised on an oil rig by 90 men and 1 prostitute
The Road Trip
- Vaughn Tom Tucker: A gruff, spitting, punch-you-in-the-gut sailor man who's taking a little break on dry land, but just until his girlfriend, Cangela, gets out of lady jail.
The Pontiac Bandit Returns
- Dante Thunderstone: Stole his first car at the tender age of nine. Has had to fend for himself since his mother was struck by lightning while she was pregnant with him. She passed, he lived. Some say that makes Zeus his dad.
Captain Peralta
- Captain Spike Masters
Payback
- Grandma Peralta
The Wednesday Incident
- El babosa. Rosa told him meant The Dagger, but it means the Slug.
Johnny and Dora
- Johnny: Undercover to follow an identity thief. Wears a coat "Don Johnson" style. (by Amy as "Dora")
Boyle’s Hunch
- Sherwin Lamonde: sculptor, painter, full-time barista. But once he sells his first piece, part-time barista.
Maximum Security
- Brent Kennedy: OB-GYN
Greg and Larry
- Larry Sherbet: After being placed in the witness protection program and relocated to Coral Palms, Florida.
The Night Shift
- Henri Renault: Cat burglar on vacation from France who went to an elite international school so he doesn't speak with an accent, although, his French accent does come out when he gets excited.
Mr. Santiago
- The Barracuda: Jake says to Victor Santiago that he calls himself that and that he hopes it catches on.
The Fugitive Pt. 2
- Egg Peralta (by Holt)
- Carl Mangerson: Lawyer of Maxime Dubois
The Last Ride
- Tyler Omaha, a BMX rider
Your Honor
- Tank Hendricks, beloved by mothers.
The Big House Pt. 1
- Bitch Boy, Beef Baby (by Romero)
Bad Beat
- Billy "Big Time" Jankowski: An online gambler who lives at his mother basement.
Return To Skyfire
Game Night
- Det. Jacob Sherlock Peralta: Jake claims to have changed his name legally.
Safe House
- Dr. Albrin Einstibe
NutriBoom
- Barry St. Barry, a NutriCruit.
Show Me Going
- El Ganador: a nickname he says he shares with Sergeant Boomer Maxwell, when it is revealed when Jake was never called by this name, he states that people will start calling him by that soon
The Tattler
- The Tattler: Back in the high school, Jake was accused of "tattling" his friend, Brandon Bliss. Soon, all of his friends started calling him "The Tattler". Jake spent the rest of his high school as The Tattler. However, it is later revealed that Gina was the real "Tattler".
The Honeypot
- Jackson Fox: NBA player, is best friends with LeBron James.
The Therapist
- Garrett: has multiple personality disorder, including Tatiana, a British mischievous seven-year-old girl, Brian, a bookkeeper in Central London, Geoffrey, an Australian man and Satchel, a gentle African-American man born in 1908.
Debbie
- Mr. Springtime: because of how fast he makes the snow (cocaine) disappear.
The Takeback
- Sean: Jake's criminal alias to hang out with Doug Judy's friends. Sent to prison for 5 years for elder abuse.
Dillman
- Prank Master General
Ransom
- Kevin Cozner: When Cheddar was kidnapped, the kidnapper demanded Kevin bring a specific file to get the dog back. Not wanting his husband in danger, Captain Holt had Jake and Kevin switch personas, and Jake went to the tradeoff disguised as Kevin.
The Good Ones
- Mitchell Keith Erikkson from Toms River, New Jersey who named himself. Fan of Billy Joel. Jake's cover persona to distract Frank O'Sullivan.
PB&J
- Jake "Zach" Peralta: Jake's claimed middle name even though his real middle name is Jeffrey, which he finds quite embarrassing. He still claims this after Doug Judy exposes his actual name.
Renewal
- Mitch: gas company employee