Families of BAU
- Played by: Meredith Monroe
The wife of team leader Aaron Hotchner, the two of them were initially a loving, stable couple, but the high time and travel demands of his job eventually began to put pressure on their relationship. The two of them eventually divorce. Some time later, she and her son are forced into hiding by the Reaper, who eventually kills her.
- Alliterative Name: Haley Hotchner.
- Face Death with Dignity:Hotch: Show him no weakness, no fear.
Haley: I know.
- Girl Next Door: For Hotch.
- Give Him a Normal Life: Plays the trope straight, though she's not technically the "hero".
- High School Sweet Hearts: Married Hotch right out of high school.
- Killed Off for Real: She's killed by the Reaper while on the phone with Hotch.
- Morality Pet: For Hotch.
- Stuffed into the Fridge: Killed by Foyet to mess with Hotch.
- Taking the Kids: Jack lived with her after the divorce, until Haley's death.
- Wet Blanket Wife: She hates being seen as this by Hotch but the job is taking a toll on their relationship and she would rather she takes a job where he doesn't have to move.
- Played by: Cade Owens
Hotchner's young son.
- Daddy Had a Good Reason for Abandoning You: The first half of season five.
- Lamarck Was Right: Seems to have a mild case of Hotch's focus and desire to fight crime, lampshaded by Foyet: "He is so cute. Check out little junior G-Man."
- Morality Pet: For his dad, of course.
- My Dad Can Beat Up Your Dad: According to Jack, "no one beats Daddy".
- Nephewism: Hotch makes a deal with Jessica, Haley's sister, that she will help him raise Jack. We have yet to see any ramifications of this.
- Played by: Josh Stewart
A N'orleans detective who assisted the team on an early case, he returned to participate in a couple other cases and eventually became the love interest and later husband of J.J.
- Ascended Extra: Originally only meant to appear in "Jones," when A.J. Cook became pregnant, the writers had to create a love interest for her quickly, and remembering her chemistry with Will, brought him back to be her mate.
- The Big Easy: But not quite avoiding stereotypes.
- A Day in the Limelight: While "Hit" and "Run" don't focus entirely on him, he plays a huge role in the story and we learn a lot about him.
- Even the Guys Want Him: Discussed on British radio.
- Funetik Aksent: Has a thick Louisiana accent.
- Happily Married: To JJ, as of the end of the seventh season.
- Like Father, Like Son: His father was also a detective.
- Married to the Job: Averted. He was perfectly willing to give it up to be closer to JJ and the baby. Season seven shows that he is now working as a detective in Washington.
- Mr. Fanservice: Oh, yes, due to his Mr Everyman looks.
- Papa Wolf: Threatened to murder a terrorist if she hurts Henry.
- Satellite Character: To JJ.
- Secret Keeper: Is aware of the real reason JJ was promoted out of the BAU.
- That One Case: In "Jones".
- Played by: Mekhai Andersen
JJ's young son.
- Cheerful Child: Never shown to be anything but a sweet little boy
- The Cutie: Cemented when he shows up for Halloween dressed as "his favorite profiler" — his godfather, Reid.
- Real Life Writes the Plot: His entire existence is thanks to this. JJ's pregnancy was written in after A.J. Cook got pregnant. Henry is even played by her actual son.
- Satellite Character: To JJ.
- Played by: Jane Lynch
Spencer Reid's mother, who did her best to raise him from a very young age after his father fled the family, despite her severe paranoid schizophrenia.
- Broken Bird: Severe paranoid schizophrenic who had to be committed to a sanitarium by her then-eighteen year old son. Has just as brilliant a mind as Spencer, under the delusions and medication. It's implied that part of her mental breakdown was the result of seeing a friend of hers kill Gary Michaels, a pedophile who killed Riley Jenkins and targeted Spencer.
- Conspiracy Theorist: Of the "government is watching me and my son works with fascists" variety.
- Cool Teacher: Was once a university professor, before the schizophrenia.
- Mama Bear: A season four two-parter comprised of The Instincts/Memoriam makes it very clear that she would never let anything hurt her son. Or have him stay in a mental institution for longer than a one night visit. When he asks her about Riley Jenkins, she tried her best to avoid talking about him, especially since her own son could have ended up like him.
- Played by: Isabella Hoffman
- Amicable Exes: She was Rossi's first ex-wife and had kept her husband's surname.
- Died in Your Arms Tonight: Rossi is with her when she dies.
- Dying as Yourself: Because she was diagnosed with amyotrophic lateral sclerosis, she wanted to die as the person she currently was, not who she would turn into due to her illness. Thus, she tries to ask her ex-husband to perform a Mercy Kill on her and be with her when she passes on.
- New Old Flame: Though Rossi had already mentioned his divorces.
- Stay with Me Until I Die: To Rossi.
- You Are Too Late: Knowing that Rossi won't help her in taking her own life, she takes a fatal dosage of pills and makes sure he doesn't find out until it's too late.
- Your Days Are Numbered: She was diagnosed with amyotrophic lateral sclerosis.
Other FBI Agents
- Played by: Nicholas Brendon
A fairly nerdy FBI computer technician, who was a co-worker of Garcia's and eventually her love interest for several seasons.
- Butt-Monkey: He is, after all, played by Trope Namer Nicholas "Xander Harris" Brendon.
- The Cavalry: Joins the team in "Penelope" following Garcias shooting, and returns sporadically over the course of the series to assist the BAU when needed - generally, if Kevin is working with the BAU, its a sign that the case is a more greater threat than usual.
- Geeky Turn-On: "Oh, you are NOT seriously trying to backhack me!"
- Mr. Fanservice: Briefly, in "Damaged".
- Non-Action Guy: As a computer tech, he mainly hangs around to help Garcia.
- Naked People Are Funny: His... awkward encounter with Rossi in "Damaged".
- Playful Hacker: Though he admits he's not as good as Garcia.
- Put on a Bus: He and Garcia break up after she turns down his proposal of marriage; while he probably hasn't actually gone anywhere, we no longer see him very much.
- Temporary Substitute: For Garcia in "Penelope".
- Played by: Jayne Atkinson
The Section Chief for the entire BAU, and thus the team's immediate superior, Strauss' role fluctuated between being an Obstructive Bureaucrat and Reasonable Authority Figure, though the team generally saw her as more of the former rather than the latter due to the political pressure she often put on them.
- The Alcoholic: Revealed to be one in season seven.
- Bait-and-Switch Tyrant: She has the occasional, very rare Pet the Dog moments. Recently, after her return, she's become much more reasonable.
- Belligerent Sexual Tension: At times her interactions with Rossi come off as this. Which hurts a lot more when she's killed away from him and her family.
- Break the Haughty: Sadistically and meticulously, by the hands of the Replicator.
- Depending on the Writer: In her first appearances, she's trying to be a manipulative bitch. Then it look like she is A Tyrant Taking The Helm. In her next appearance, she becomes a Bait-and-Switch Tyrant and gets a few Pet the Dog moments. Then she's back to the Obstructive Bureaucrat boss who does things over the team's objections. Now she's politicking while still giving the team a chance to do things their way, and at times seems to be trying to make up for previous jerkish behavior.
- Face Death with Dignity: Painfully averted. Her final moments are spent crying and wanting her kids, wishing she had died before allowing the Replicator to humiliate her.
- FBI Agent: Section Chief, effectively supervising the BAU.
- Iron Lady: As a supervisor of the team, she plays this role.
- Jerk with a Heart of Gold: She comes off as a politically-minded Obstructive Bureaucrat, but there are a great number of instances where it's clear that she's actually just trying to help/protect the team.
- Obstructive Bureaucrat: Started out as one, before becoming more of a supporter of the team.
- Parental Favoritism: Hotch profiles that of her three children, she favors her son, the middle child.
- Pet the Dog:
- Surprisingly, in "100", after spending the entire episode investigating the events around Haley Brooks Hotchner's death and Hotch going off the rails, interrogating the team and trying to pin the blame on Hotch, she's in tears after Hotch's testimony, and refuses to pursue the matter any further.
- Look carefully. With her reaction to Hotch's testimony in mind, reconsider how she questions the team through the episode. It sounds an awful lot like she's carefully leading them into giving them just the right opportunities to defend Hotch as best they can.
- Put on a Bus: Left for rehab; see The Alcoholic above. She's back and better as of "Hit/Run." That is, until the "Replicator" attacks...
- Stay with Me Until I Die: After being fatally poisoned by the Replicator, she asks Hotch to stay with her so she won't die alone. He does.
FBI Executive Assistant Director Linda Barnes
- Played by: Kim Rhodes
The FBI Executive Assistant Director, formally introduced in Season 13 as a new supervisor to the BAU's actions.
- Bitch in Sheep's Clothing: She puts up a professional facade to hide the fact she's aspiring to become the new FBI Director, while unloading both her true intentions and her tendencies of control on the team with a condescending attitude.
- Control Freak: She operates and regulates teams based off a need to display power and control thanks to her position, aiming for efficiency and effectiveness rather than any sort of team dynamic because she wants to be Executive Director. Prentiss even says she boasts of her power not because she has none, but because she can't get enough of it.
- Foil: To Erin Strauss, somewhat. Like Strauss, Barnes is a higher power within the FBI who oversees the BAU's activities and is generally perceived as a "villain" for the team, interfering with the group and nearly causing their complete separation. However, while Erin was obstructive and did have personal grievances with the old team, at least she maintained tact and, once she understood how well they operated when left to their devices with moderate supervision, she began to actively help the team a little more. Barnes, on the other hand, willingly separated the Internation Response Team and withdrew information of a certain case to aid her own climb in the FBI's ranks, while also managing to separate the BAU on technicalities and enforced accolades to look more diligent than she really is.
- Hoist by Her Own Petard: The case she withdrew information from comes back to bite her when said case's Unsub returns to an active state, kidnaps and nearly kills the daughter of a US Senator, especially karmic due to Barnes releasing JJ for asking about said case when it could be useful to their investigation. When the Senator does come to the scene to congratulate the team for saving his daughter, aware of their relocation, he forces Linda to reinstate Prentiss as Section Chief on the spot, who then informs him of Barnes' actions regarding the case and the team. He promptly tells her to go to his office the next day, the implicated punishment rather clear.
- It's All About Me: How Prentiss profiles her hold over the BAU. Because Linda aims for efficiency and control, she skims down the teams under her supervision down to the most effective members, cutting corners and evaluating each member by themselves, effectively pitting one against the other, as she did with Matthew Simmons' old team, the IRT. This is all because she truly wants to become the FBI's Executive Director, which would give her even more power and leniency to do as she pleases.
- Kick the Dog: At the end of Season 13's "Annihilation", Barnes uses her connection to the Executive Director to successfully separate the BAU, using their accolades to reassign them to different positions and forcibly retiring Rossi, keeping only Simmons and Alvez while giving Jennifer a new position that boils down to being Barnes' lapdog and running each possible case and action through her first and foremost.
- Obstructive Bureaucrat: Effectively replacing Erin Strauss in Season 13 as the new FBI member on a higher position who constantly interferes with the BAU team, but she's arguably worse than Strauss ever was. She also willingly withdrew information on a case during her time with the IRT to save face, which nearly cost the BAU a victim's life when said case's killer returns to action.
- Never My Fault: By her own hand, an Unsub ends up shooting and nearly killing his intended target while he himself is killed when he could easily have been apprehended instead. Instead of taking responsibility for the operation failing, she blames the BAU under JJ's leadership (which Barnes herself imposed) and successfully gets the FBI's Executive Director to reassign each member apart from Alvez and Simmons, retire Rossi and essentially turning Jennifer into her lapdog.
- Screw the Rules, I Make Them!: When she separates the BAU, she assigns JJ as "Conditional Unit Chief", a position she created to essentially place Agent Jareau under her thumb and have her do as told.
- Too Dumb to Live: In "Annihilation", the Unsub is cornered by the BAU at an airport and is threatening suicide unless a witness they have under safety - a woman the Unsub was stalking and is obsessed towards - is brought to him. Even despite the fact that it is painfully obvious he's angry at said woman and is planning something, Barnes decides to bring her into the scene to try and pacify him, which of course results with the killer shooting the victim (she survives due to a covered bulletproof vest), forcing the BAU to put him down instead of arresting him as Barnes herself originally intended. Never mind that the Unsub was already lowering his gun on the team's urging and Linda put herself on risk as well as the victim, bulletproof vest or otherwise. And later, when JJ rightfully calls her out on this, Barnes' response is to accuse the BAU of "being too slow".
- Played by: Isabella Murad
- Boyish Short Hair: Done by Billy so she'll look less like a girl.
- Broken Bird: Her family was murdered and she was kidnapped.
- Important Haircut: Billy cuts her hair to make her look less like her description.
- Little Miss Badass: Stands up to Billy and manages to screw over one of his crimes, mocking him the entire time.
- Missing Mom: Her mom disappeared for years. And then Billy offed her dad...
- Morality Pet: To Billy Flynn, who murdered her father, raped her aunt, killed her grandparents...and sees Ellie as a granddaughter figure.