History Characters / CSI

* AgeGapRomance: With Sara.

* LoveRealization: Mixed with WhamLine seen below.

* SarcasmFailure: When he doesn't use the above.

* FakingTheDead: With D.B. to escape the bad guys before her departure.

* OfficialCouple: With Vartaan. For a while, anyway.
* PlatonicLifePartners: With Grissom.

* SingleMomStripper: Retired.

* [[HotForTeacher Hot For Supervisor]]: see above

* RelationshipReveal: With Grissom.

* CoolTeacher: Tries to be this in his revival appearances, despite the CSIs already knowing much of what he tells them

* [[ISeeDeadPeople I *Might* See Dead People]] / MaybeMagicMaybeMundane: His grandmother had "the Sight" and the psychic who sensed his grandma tells him he has it too. One the one hand [[spoiler: he can't detect anything when he's in the "haunted" slaughterhouse with the killer]], on the other [[WildMassGuessing one could argue]] [[spoiler: the spirits are being really quiet so he can hear the killer's ringtone, which was caught on tape by the psychic before she was killed]].

* TheLabRat[=/=]MisfitLabRat: At first.

* OutOfFocus: From Season 9 onwards.

* ExtremeMeleeRevenge: Does this to Haskell in "In A Dark, Dark House."

* SuspiciouslySimilarSubstitute: Not for Langston, but rather Grissom.

* WellDoneSonGuy: Seems to have a bit of this with her father, Ecklie.

* SassyBlackWoman
* AmicableExes: While they don't speak often, Max's relationship with her ex husband is still strong enough that he was willing to get on a plane to Vegas the moment he heard her life was in danger from a serial killer

* BadInfluencer: Albeit unintentionally. His pre-CSI crime solving TikTok videos get a seeminly innocent person released, only for it to turn out years later he was wrong and he helped release a murderer.

* BrotherSisterTeam

* BrotherSisterTeam

* AsianAndNerdy: He's a computer analyst and a Franchise/StarTrek geek. Could be {{subverted}} since he does have 'cool' hobbies like surfing and snowboarding.

[[folder:Henry Andrews]]
[[quoteright:175:https://static.tvtropes.org/pmwiki/pub/images/csihenryandrews.jpg]]
->Played by: Creator/JonWellner
* ButtMonkey: "Appendicitement" and "Field Mice" are the biggest examples.

[[/folder]]

[[folder:Bobby Dawson]]
->Played by: Creator/GeraldMcCullouch

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** TheBusCameBack: Comes back for the finale, and for a few appearances in the revival.

** TheBusCameBack: Returns late in Season 11. [[RankUp She's Deputy Chief now.]]

* RankUp: To Undersheriff and eventually Sheriff.

* TheRival: To Grissom, who deplores Ecklie's careerism.

* BigBad: [[spoiler:Of Season 8, the 12 finale, and the premiere of 13]].

* SuicideByCop: Attempts this with Nick, but Nick doesn't go through with it.

[[folder:Frankie Leeds]]
->Played By: Creator/KateeSackhoff

[[/folder]]

[[folder:Carlos Moreno]]
->Played By: Creator/EnriqueMurciano

[[/folder]]

* {{Dominatrix}}: Her chosen profession.

* EthicalSlut: As befits her profession as a {{Dominatrix}}.

* TheDon: Gives off this impression, but nothing's ever proven beyond this.

* HangingJudge: In his SecretIdentity.

* BigBad: Of Season 7 and the first episode of Season 8.

* TheHeavy: Has this on Grissom long after being put in prison, only matched by Millander and later Nate Haskell for Ray Langston.

* TheHeavy: This guy's specter hangs over the C.S.I.s from his first appearance to [[spoiler: just past his death when his saga results in Langston being forced out and Catherine and Nick getting demoted back to their original positions from when Grissom dealt with Haskell; this leads to Catherine's own exit from the lab later.]]

* BigBad: Of Season 10.

[[folder:Brother Daniel Larson]]
->Played By: Creator/EricRoberts

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* ThatOneCase: Jekyll's odd surgeries (starting with someone who was already dead, but moving on to actual murder thru surgery after the C.S.I. trilogy) stump Langston and Dr. Robbins throughout the show's 10th anniversary, with Langston taking his work home. They [[DealWithTheDevil eventually have to]] [[EnemyMine enlist Nate Haskell]], the BigBad of Ray's introductory episodes, to finally bullseye Jekyll, but this move [[NiceJobBreakingItHero leads to the Season 11 plotline]] and the events that end in Langston and Catherine's departures from the crime lab.

* FallenHero: Possibly. After his mother is killed, [[spoiler:Josh bails out his childhood friend Trey and kidnaps a man they think can tell them about who killed her. After tricking him into thinking Josh slit his wrists and would bleed out if he didn't tell the truth, Josh finds scratch marks on the mans arm, matching the spot his mom clawed at before she died. This causes Josh to realize ''he'' killed her, and while what happens next is [[AmbiguousSituation intentionally vague]], the CSI's find the man's body dead in a dumpster, the kidnapping scene all but wiped clean, and Max and Chavez are forced to arrest him for the man's murder.]]

* MsFanservice: "Long Pig" has end the episode swimming in a black one-piece.

* FallenHero: After his mother is killed, [[spoiler:Josh bails out his childhood friend Trey and kidnaps a man they think can tell them about who killed her. After tricking him into thinking Josh slit his wrists and would bleed out if he didn't tell the truth, Josh finds scratch marks on the mans arm, matching the spot his mom clawed at before she died. This causes Josh to realize ''he'' killed her, and while what happens next is [[AmbiguousSituation intentionally vague]], the CSI's find the man's body dead in a dumpster, the kidnapping scene all but wiped clean, and Max and Chavez are forced to arrest him for the man's murder.]]

** ''[[{{Deconstruction}} Brutal]]'' case in point being Leo Finley from "A Thousand Days on Earth." She believes he is a child molester because of his name on the Sexual Predator Watch List though he was only there because of an incident where he got high on hallucinogenics and walked out naked in front of a bus full of children. After the man's fiance finds out about his past (through Catherine vindictively outing him) and that he is using an assumed name, she kicks him out of the house and then gets him fired by telling his boss. The man walks up to Catherine in the parking lot after this, threatening to shoot himself in the head on her front lawn one day, even calling her a "blonde Nazi bitch" when she [[BlatantLies insists]] she was [[JustFollowingOrders just doing her job]].