The San Joaquin County District Attorney from Stockton assigned to aggressively address the violence plaguing Charming, specifically from a school shooting resulting in the deaths of four children using a gun acquired from the Sons of Anarchy motorcycle club. To do so, she works with former U.S. Marshal Lee Toric to investigate the Sons.
- Anti-Villain: Goes to some extreme lengths to accomplish her goals, but never crosses the Moral Event Horizon. On most shows she would be an Anti-Hero.
- Back for the Finale: Unlike Barosky and Marks, she escapes with her life, though her reputation will undoubtedly take a hit in the process.
- Big Bad: After Lee Toric's death, she steps up to be a Hero Antagonist version of Big Bad in Season 6.
- Black Boss Lady: In her capacity as the San Joaquin County District Attorney.
- Evil Costume Switch: Sort of. After Toric's death she takes off her wig, revealing her Dreadlock Warrior-esque hairdo and reveals her real personality.
- The Ghost: She is referenced by her title as early as the Pilot, and a number of times after that over the next five seasons, but she doesn't actually appear until Season 6.
- Hero Antagonist: She's trying to shut down the Club, which is...actually a pretty reasonable goal. She also seems genuinely interested in helping Tara get out if she can, though of course it does help her agenda.
- Iron Lady: Tyne Patterson is unflinching and authoritative.
- Knight Templar: "In my book [Tara Knowles] is bad until she does something good." She even attempts to blackmail Barosky.
- Silk Hiding Steel: Patterson is well-dressed and highly educated, but it would be a mistake to think she isn't a badass.
- Sympathy for the Hero: She understood Jax's pain after Tara was brutally killed, having lost her son and a nephew to senseless acts of violence. She also understands what is Jax's obvious next move when is released from prison to the point that she lampshades it very well:Patterson: That's a natural reaction. The desire for revenge, it's a part of grieving. The difference is in my world, I knew that those violent desires would never become real. In yours, it's a very likely outcome.
An Assistant U.S. Attorney operating out of Charming. He headed a joint agency task force targeting the Sons of Anarchy's arms trafficking business under the Racketeer Influenced and Corrupt Organizations Act.
- Big Bad/Big Good: Throughout Season 4, Potter appears to be similar to Stahl, working the Sons of Anarchy for his own ends. When his RICO investigation is ruined by the CIA, however, he reveals his true colors by thanking Roosevelt for his hard work, covering for Juice with SAMCRO, and undermining Hale's development project — not because any of this brings him anything, but because the CIA's interference has made things worse for Charming. He does what little he can to make them better as he goes.
- Bunny-Ears Lawyer: Prone to philosophize and even does ballet moves on top of the table when left alone in his Secret Room. And eat candy while Otto reads the deal to sell out the club. And smoking while hanging upside down.
- The Chessmaster: He's a master at making it utterly impossible for anyone to go against his wishes.
- Creepy Good: Potter is a strange, antisocial weirdo who seems almost inebriated at times. And yet, he's actually very moral, and quite firm in trying to do the right thing.
- Consummate Liar: He doesn't even need to lie as much as he does, it just seems to amuse him. Only Otto ever picks up on it.
- Deadpan Snarker: Emphasis on the deadpan.
- Good Is Not Nice: He's weird, creepy and and cold...but he's actually on the side of the angels.
- Hellbent For Leather: His trademark leather jacket.
- Hero Antagonist: To the Sons. After all, they're a criminal organization.
- Manipulative Bastard: Potter manipulates the club rather expertly, and it's only due to the CIA's eleventh-hour involvement that his plan to take them down doesn't come to fruition.
- Unknown Rival: Though he poses a major threat to SAMCRO, the club as a whole is never aware of his existence. The only Sons he ever meets are Juice and Otto.
An FBI Agent assigned to investigating the SAMCRO's arms trafficking business. He works closely with Assistant U.S. Attorney Lincoln Potter, often by his side during various points in the investigation.
A former U.S. Marshall who was forced into retirement for a variety of reasons including excessive use of force and racial profiling. After his sister is killed by Otto Delaney, he makes it his mission to take down the Sons of Anarchy.
- Anti-Villain: Seems poised to become type III or IV.
- Big Bad: For Season 6. Subverted with his death at Otto's hands in "Wolfsangel" just four episodes into the sixth season.
- Cowboy Cop: When he was a U.S. Marshal, now he's more of a Rabid ExCop.
- Cultured Badass: At the end of "Darthy", he's seen reading "Watchfiends and Rack Screams" by French poet and theatre innovator Antonin Artaud.
- Deadpan Snarker: Upon seeing Otto bite his own tongue off, he deadpans, "way to commit, Otto." Even before his death, with his Final Words being "I didn't see that coming", which doubles as a Lampshade.
- Disc-One Final Boss: He was set up to be the main antagonist for season six, but he was killed by Otto in the season's fourth episode.
- Disposable Sex Worker: He accidentally shoots an escort (whom he'd just spent the night having sex with) when she sneaks up behind him while he's looking out the window. Although the wound wasn't fatal, he immediately decides to kill her by shooting her in the head. He then plants evidence to make it look like Nero was the one responsible for killing the girl.
- Fan Disservice: His nude scene in the Season 6 premiere.
- Fate Worse than Death: Promises this to Otto after he kills Lee's sister. In Season 6 he delivers, having Otto go through to daily beatings and rapings.
- Functional Addict: Heroin. And pills.
- Karmic Death: He is brutally killed by Otto; the man he had been tormenting for weeks.
- Manipulative Bastard: He's hurt the club deeply and is still working to hurt it, regardless of who gets in his way, but has been working mostly behind the scenes and through outcasts like Otto and Clay.
- No-Holds-Barred Beatdown: On Otto.
- Retired Badass: Former U.S. Marshall.
- Screw the Rules, I Have Connections!: He makes frequent allusions to his 'favors' but also notes that they are finite.
- Zipping Up the Bodybag: Unlike Otto, we don't see Toric zipped up - But we see his bag unzipped by Patterson.
A corrupt prison guard loyal to the One-Niners.
- Dirty Coward: When his wife shows up to defend him with a shotgun, he takes the chance to run away.
- Dirty Cop: Like Goodman, he works for Pope.
- Evil Sounds Deep: Due to Jack Conley's deep baritone voice.
- Just Following Orders: The justification he gives for causing the death of Opie.
- Villainous Breakdown: After his wife is killed in front of him, Macky loses it completely.
A Detective in Oakland, under Damon Pope's employment.
- Bald of Evil: Goodman is bald and a more-than-willing employee of Damon Pope.
- The Brute: For Pope, within the law. He's later dismissed by Pope as being 'sloppy'.
- Dirty Cop: He's on Pope's payroll.
- Smug Snake: Goodman is much more confident than he has a right to be. It gets him killed.