Played by: Bojack HorsemanReal actor
The titular protagonist of Philbert. He's a crooked LAPD detective with a dark past, who may or may not have been responsible for killing both his wife and his partner in the police force.
- Anti-Hero: Seems to be an Unscrupulous Hero, if not an outright Nominal Hero.
- Badass in a Nice Suit: As a police detective, he's always dressed in a cool suit.
- Cowboy Cop: He prefers to solve problems with action and violence.
- Dark and Troubled Past: Has a dead wife he's obsessed with that he may or may not have killed. No, his partner Fritz did... no, Philbert made Fritz up to deflect his guilt of killing his wife.
- Dirty Cop: He's a rather crooked police detective, and is heavily implied to be a murderer too.
- Ephebophile: It's strongly implied that Philbert was seriously considering whether or not to have sex with a teenage girl who was taken captive by human traffickers. This scene was written due to Diane's discovery of Bojack's almost-affair with a teen girl in New Mexico.
- The Narrator: He's always providing neo-noir style, first-person narrations.
- Villain Protagonist: Due to possibly being responsible for killing his wife and Fritz.
Played by: Mr. PeanutbutterReal actor
Detective Philbert's deceased partner. He died under suspicious circumstances, though he (seemingly) continues to haunt Philbert as a ghost.
- Badass in a Nice Suit: He always wears a black suit, and is also a skilled gunfighter like his partner.
- Cowboy Cop: Like Philbert, he's a bit trigger-happy when dealing with suspects.
- Dirty Cop: Just like Philbert, he's a corrupt cop.
- Maybe Magic, Maybe Mundane: Is he a ghost? Is he just a paranoid delusion in Philbert's mind? Was he even a real person to begin with?
- Mean Character, Nice Actor: In-Universe. He's a rather villainous character played by Mr. Peanutbutter, who's well known for his reputation as a likable, friendly guy in real life. Heck, the role of Fritz was originally supposed to go to the controversial actor Vance Waggoner, until his misbehavior and PR troubles led to Peanutbutter being cast instead.
- Posthumous Character: He's been dead for some time, and possibly died at Philbert's hands.
Played by: Gina CazadorReal actor
Philbert's current partner and love interest, a sassy female detective who's desperate to discover Philbert's dark secrets.
- Ambiguously Brown: She's played by a Hispanic actress, but her surname Malone is of Irish origin.
- Deadpan Snarker: Her name is Sassy after all.
- Fair Cop: She's quite an attractive policewoman.
- Flat Character: In-Universe. Initially, her only character traits are to be a Deadpan Snarker and be nude a lot. Though after Diane joins the writing team, Sassy Malone becomes a much more rounded character.
- Love Interest: She starts dating Philbert, partly out of romance, but also to get close enough to learn the secrets he's hiding.
- Ms. Fanservice: She gets a scene devoted to Philbert drawing a picture of her while she's naked.
- Pungeon Master: Sassy loves saying punny one-liners, even in situations where they are rather inappropriate.
- Spicy Latina: She's an attractive sassy detective who has quite a few nude scenes. This is Played With however, since she is Ambiguously Brown and not explicitly Latina, even if she is portrayed by a Hispanic actress.
Played by: Unknown
A reptilian femme fatale who tries to shoot Philbert dead.
- Chandler's Law: Her appearance kickstarts Philbert 's tangled plot.
- Death by Woman Scorned: Averted, if only because of Philbert's unhealthy obsession with keeping his wife's blood in a flask.
- Femme Fatale: Very, very much. Slim, beautiful, mysterious, and shoots the hero without hesitation.
- Mean Character, Nice Actor: In-Universe. A photo posted on BoJack's Twitter feed of the table reading, shows the actress who plays her having fun with the rest of the cast.
- Reptiles Are Abhorrent: She's a Femme Fatale lizard who shoots the protagonist.
Played by: Unknown
John Philbert's late wife.
- Driving Question: In-universe: Did Philbert kill his wife?
- The Lost Lenore: To Philbert. To say he's still obsessed with her is an understatement.
- Posthumous Character: She was murdered not by Fritz, but by Philbert himself.
- Stuffed into the Fridge: She pretty much exists just to give Philbert a Dark and Troubled Past to brood over, and for Sassy to try to uncover the truth of.