History Characters / BoardwalkEmpireFederalLawEnforcementPersonnel

* BiggerBad: In Season 4. As the new Director of the Bureau of Investigation, he institutes highly selective hiring standards and ruthlessly efficient investigation procedures that provide his organization with the resources to infiltrate and thoroughly investigate Nucky's massive criminal empire. It is this fact that enables [=BoI=] agents such as [[spoiler: [[BigBad Jim Tolliver]]]] to pose a far greater threat to the Atlantic City political machine than BRI Agent Van Alden ever did.

!!BIR Agent Warren Knox/BoI Agent James Tolliver

* FakeAmerican: Peter [=McRobbie=] is Scottish.

[[caption-width-right:300:"You are a Prohibition agent, not BulldogDrummond!"]]

[[[[folder:Malone]]

[folder:Ness]]

[[folder: Federal Agents]]

->'''Played by''':Erik Weiner

Van Alden's Jewish partner at the beginning of the series and TheMole in the Prohibition Unit for Nucky. He is accidentally murdered by Van Alden at the end of the first season in a misguided attempt to make him confess his crookedness.

!!Tropes:
* AffablyEvil: While he's corrupt and on the take, he's a rather likable guy and is depicted as being much more sympathetic than Van Alden.

* BeleagueredAssistant: With a twist - Van Alden is crazy, but he is really more efficient than Sebso.
* BumblingSidekick: As part of ObfuscatingStupidity.
* TheDanza
* DirtyCop
* FaceHeelTurn

* MauveShirt
* TheMole
* PreemptiveDeclaration: Uses this before killing a witness he was paid to silence.

* YiddishAsASecondLanguage

!! BIR Agent Warren Knox[[spoiler:/[=BoI=] Agent James Tolliver]]
->'''Played by''': Brian Geraghty

A federal agent who travels to New Jersey for the expressed purpose of apprenticing under Agent Sawicki. [[spoiler: He is ultimately revealed to be a special agent sent to Atlantic City to root out government corruption on behalf of the newly constituted Bureau of Investigation.]]

!!Tropes:

* BeenThereShapedHistory: [[spoiler:He's on first name basis with J. Edgar Hoover.]]

->'''Played by''': Joseph Aniska

!!Tropes:

->'''Played by''':Joel Brady

!!Tropes:

!!Tropes:

!!Tropes:

[[folder: Bureaucrats]]

->'''Played by''': Julianne Nicholson

!!Tropes:

->'''Played by''': Eric Ladin

!!Tropes:

->'''Played by''':Peter [=McRobbie=]

!!Tropes:

The Assistant US Attorney assigned to prosecute Nucky for election rigging, embezzling, murder and bootlegging. Unlike her predecessor, who was on the take, she represents a challenge to Nucky because of her profesionalism and the fact that she can't be bought by [[HookersAndBlow the usual means]] since she is a teetotaler and [[CaptainObvious a woman]]. During her stance in Atlantic City she is also assigned the same room where Van Alden has his office, causing conflict with him.

* GoodIsNotNice: However, she's one of the few law enforcement characters who isn't corrupt or a KnightTemplar

* SympatheticInspectorAntagonist

* AssholeVictim: [[spoiler: No one shed any rears when Eli bashed his brains in]]

* HistoricalDomainCharacter: [[AlluminiumChristmasTrees He really existed]].

!!Mike D'Angelo

* BeenThereShapedHistory: In the show, he is the agent that really brings down Capone, while Ness is a comparatively minor character.

* RememberTheNewGuy: Because of the unplanned 7 years-long time jump between seasons 4 and 5. At the end of 4, Capone replaces Torrio as boss of the Outfit. In 5, D'Angelo is bringing Capone down.
* TheSmartGuy: To the point of apaprently replacing ''Frank Capone'' in the organization, as both Al and Ralph look up to him.

* AbortedArc: At the end of S4, he forces Dr. Narcisse to become a snitch for him and bring down the UNIA [[IronicPunishment CallItKarma]]. This is not revisited in S5, which is set 7 years later and Hoover's character is absent.

!!Eliot Ness
->'''Played by:''' Jim True-Frost

A Chicago Treasury agent who has publicly declared that he will bring down Al Capone.

* {{Jerkass}}

* [[spoiler: AssholeVictim]]: [[spoiler: No one shed any rears when Eli bashed his brains in]]

* [[spoiler: BeenThereShapedHistory: He's on first name basis with J. Edgar Hoover.]]
* [[spoiler: BigBad: In Season 4 along with Dr. Narcisse as part of the story arc's BigBadEnsemble. His investigation into the existence of a nationwide criminal conspiracy on behalf of the BOI poses the most direct threat to Nucky Thompson and ultimately succeeds in placing his entire organization within Hoover's crosshairs by the end of the season (albeit [[PyrrhicVillainy not quite the way he intended]]).]]

* [[spoiler: CassandraTruth: He's (correctly) convinced that the major American crime bosses in New York, Atlantic City, Chicago, and Florida are all working together. However, his superiors don't believe him, no matter how much evidence he gathers.]]
* [[spoiler: CleanUpTheTown]]

* [[spoiler: DudeWheresMyRespect: He's unamused by Hoover stealing his theories and not giving priority to his investigations.]]

* [[spoiler:FauxAffablyEvil]]:[[spoiler: He(Almost) never raises his voice, and gets along very well with Eli's family, this is all an act, of course. He also attempts to induce Stockholm Syndrome on Eddie when he's interrogating him and on Eli when he becomes his informant.]]
* [[spoiler: FBIAgent:He is an undercover agent sent by J. Edgar Hoover to root out corruption in the BIR and take down bootleggers.]]
* [[spoiler: {{Foil}}: To Sebso. Both have their own goals and hide them from their superiors by playing ObfuscatingStupidity, but while Sebso is a corrupt agent on Nucky's pay roll that is sabotaging Van Alden's work, Knox (AKA Tolliver) is an undercover [=BoI=] agent that really wants to get rid of alcohol and corruption within the BIR, starting by the dirty agents Sawicki and Elliot.]]

* [[spoiler: ManipulativeBastard[=/=]TheSneakyGuy: Early in the season 4 premier he sees Agent Sawicki take a bribe and also hears a bootlegger complaining about how the bootlegger's warehouse has been broken into so many times that he's rigged a lethal booby trap for the next thief. Tolliver promptly pretends to receive a tip that sends Sawicki and himself to the bootlegger's warehouse, and pretends to be so incompetent that Sawicki actually orders him to stay by the car... and out of harm's way. Sawicki gets mortally wounded, Tolliver kills the bootlegger as he comes to see who tripped his trap, and then calmly tells the dying Sawicki that he'll call for help... as soon as he gets over the shock that is affecting him. He then simply watches Sawicki die.]]

* [[spoiler:ObfuscatingStupidity: After spending the season premiere looking like a laughably gullible guy, he shows his true colors as the second coming of Van Alden.]]

* [[spoiler:RasputinianDeath]] [[spoiler: He is punched, kicked, choked and finally bludgeoned to death by Eli.]]

* [[spoiler: SuspiciouslySimilarSubstitute: To Van Alden.]]

* [[spoiler:UndercoverCopReveal: He is actually an undercover Bureau of Investigation agent posing as a corrupt BIR agent.]]
* [[spoiler: VillainousBreakdown[=/=]HeroicBSOD: After getting ignored one to many times by his superiors, and having an important sting operation go awry under his watch, what little sanity Knox possesses begins to quickly fray. ]]

* [[spoiler: WellIntentionedExtremist]]

* [[spoiler:BloodFromTheMouth]]
* [[spoiler:CruelAndUnusualDeath: Shot by a shotgun tied to a door, left to choke on his blood while his "partner" stares at him joking he'll do nothing.]]

* [[spoiler: KarmicDeath]]: If he did in fact set Owen up,[[spoiler: his own death can be practically considered LaserGuidedKarma. Fed up with Sawicki's corruption, his new partner Knox talks him into making a bust knowing that it will get Sawicki killed.]]

* [[spoiler:DirtyCop]]: Shown to be working with [[spoiler:Nucky]] in season 4.

* HannibalLecture: Gives one to Valentine Narcisse, who has been giving them to everyone else throughout the series. It would be satisfying if Hoover wasn't trying to bully Narcisse into compromising his principles and spy on civil rights leaders.
-->'''Valentine Narcisse''': Marcus Garvey is a hero, devoted to the liberation of a great people.
-->'''J. Edgar Hoover''': But you are not. ''You'' are just a peddler and a pimp, sitting in a jail cell.
-->'''Narcisse''': I am a businessman, and a follower of Christ.
-->'''Hoover''': You agree to co-operate, and you can go on pretending to be anything you want. You don't, and I will make sure you never see daylight in America again.

* GratuitousGerman: As a former member of Military Intelligence during WorldWarOne, he speaks it fluently and drops some sentences in "Erlkonig".

* BiggerBad: In Season 4. As the new Director of the Bureau of Investigation, he institutes highly selective hiring standards and ruthlessly efficent investigation procedures that provide his organization with the resources to infiltrate and thoroughly investigate Nucky's massive criminal empire. It is this fact that enables [=BoI=] agents such as [[spoiler: [[BigBad Jim Tolliver]]]] to pose a far greater threat to the Atlantic City political machine than BRI Agent Van Alden ever did.

->''"I think it’s time, considering the respect the position deserves, you begin referring to me as 'Director' Hoover."''

* BiggerBad: In Season 4. As the new Director of the Bureau of Investigation, he institutes brutally effective investigation procedures and highly selective hiring standards that provide his organization with the resources to infiltrate and thoroughly investigate Nucky's massive criminal empire. It is this fact that enables [=BoI=] agents such as [[spoiler: [[BigBad Jim Tolliver]]]] to pose a far greater threat to the Atlantic City political machine than BRI Agent Van Alden ever did.

* BiggerBad: In Season 4. As the new Director of the Bureau of Investigation, he institutes brutally effective investigation procedures and highly selective hiring standards that provide his agents with the resources to infiltrate and thoroughly investigate Nucky's intricate organization. It is this fact that enables [=BoI=] agents such as [[spoiler: [[BigBad Jim Tolliver]]]] to pose a far greater threat to the Atlantic City political machine than BRI Agent Van Alden ever did.

* BiggerBad: In Season 4. As the new Director of the Bureau of Investigation, he institutes brutally effective investigation procedures and highly selective hiring standards that provide his agents such as [[spoiler:[[BigBad Jim Tolliver]]]] with the resources to infiltrate and thoroughly investigate Nucky's intricate organization. It is this fact that enables [=BoI=] agents such as [[spoiler: [[BigBad Jim Tolliver]]]] to pose a far greater threat to the Atlantic City political machine than BRI Agent Van Alden ever did.

* BiggerBad: In Season 4. As the new Director of the Bureau of Investigation, he institutes brutally effective investigation procedures and highly selective hiring standards that provide his agents such as [[spoiler: [[BigBad Jim Tolliver]]]] with the resources to infiltrate and thoroughly investigate Nucky's intricate organization. It is this
fact that enables [=BoI=] agents such as [[spoiler: [[BigBad Jim Tolliver]]]] to pose a far greater threat to the Atlantic City political machine than the zealous BRI Agent Van Alden ever did.