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* FriendlyEnemy: Loomis is this toward Michael in ''4'' and ''5'', as he tries to talk with him and reason with his former patient before taking aggressive actions. Even after setting a trap for him in the fifth film, when approached by Michael, Loomis comes up to him with no weapon and encourages him to pursue a positive relationship with Jamie.
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* TheUnfought: [[spoiler:In the Producer's Cut of ''Curse'', Loomis never encounters Michael in any capacity, with it being the only film in the original series where they have no confrontation.]]
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* InformedAttribute: At the start of ''4'', Dr. Hoffman states that Loomis would be present for Micheal's transfer from Smith's Grove to Ridgemont if he bothered to read the memos that were given to him, but Loomis is never shown at any point to neglect reading important information pertaining to Michael.
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* RuleOfSymbolism: Loomis relies on this during his plan to trap Michael in the Myers house in ''5''. He has Jamie sit in her aunt's room (where Michael committed his first killing) and do her hair as Judith used to so he can replicate the beginning of Michael's murderous tendancies.
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* DeathByAdaptation: After surviving the original series (or, as is implied by the ending of ''Curse'', at least until the end of it), Loomis dies a few years before the events of ''H20'', the first film to ignore the continuity of previous movies in the series.
* DefensiveFailure: Loomis tries to shoot Michael in the head in ''Halloween II'', but is out of bullets from shooting him earlier and is instead stabbed by the latter.
* DefensiveFailure: Loomis tries to shoot Michael in the head in ''Halloween II'', but is out of bullets from shooting him earlier and is instead stabbed by the latter.
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* IgnoredExpert: Loomis, who had studied Michael for fifteen years and played a key role in his recapture, recommended that Michael's life be terminated. The authorities disregarded Loomis and kept Michael institutionalized, leaving the possibility that he could escape again (which he does) and go on another rampage (which he did).
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* IgnoredExpert: Loomis, who had studied Michael for fifteen years and played a key role in his recapture, recommended that Michael's life be terminated. The authorities disregarded Loomis and kept Michael institutionalized, leaving the possibility that he could escape again (which he does) and go on another rampage (which he did). {{Justified}} since he was a psychiatrist with no legal authority to sentence someone to death, even Michael Myers.
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* ForgottenFallenFriend: He is this to Laurie in the ''H20'' timeline, as despite saving her life repeatedly in 1978, she is never shown to speak of him whatsoever.
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* IShallTauntYou: His strategy for defeating Michael in the final battle of ''5'' is to goad him into following him as he holds the screaming Jamie, imploring him to catch "the little girl."
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* VindicatedByHistory: In-Universe example. Loomis in the ''H20'' timeline never stopped believing that Michael was still out there, and although he didn't live to see it, was proven right when Myers resurfaced to face Laurie.
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* TheCameo: His speech to Brackett about his past with Michael from the original can be heard in the opening credits of ''H20''.
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* ParentalSubstitute: Loomis serves as one to Jamie in ''5'' [[spoiler:due to the Carruthers being away and Rachel dying early into the film.]] He constantly comes to see her and tries to fulfill her requests, such as begging Tina not to leave her side.
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* TrueCompanions: He is this with Laurie and Jamie, as he puts his life in danger to save them. In ''Curse'', all it took was hearing Jamie's voice call his name over the radio for the retired Loomis to rush back into action.
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* {{Curse}}: [[spoiler:At the end of the Producer's Cut of ''Curse'', a dying Dr. Wynn passes on his Thorn mark to Loomis.]]
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* TeethClenchedTeamwork: Overtime, this becomes his dynamic with both Sheriffs Brackett and Meeker. With Brackett, the latter becomes progressively frustrated with Loomis giving him orders and still not finding Michael and Loomis earns Meeker's ire after he reveals that Michael has returned to Haddonfield against the former's orders.
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** The fifth film has Loomis trying to get Jamie to use her telepathic powers to help him find Michael. She eventually agrees to his plan and Michael chases after Jamie. Loomis uses her to lure Michael into a trap and he beats Michael while shouting for him to die. While this technically stops Michael's killing spree for the night, as he is taken to the police department in his weaken state, [[spoiler:Wynn bursts him out of jail and abducts Jamie, with Loomis failing to stop him permanently (as he had intended) and being unable to protect Jamie.]]
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** The fifth film has Loomis trying to get Jamie to use her telepathic powers to help him find Michael. She eventually agrees to his plan and Michael chases after Jamie. Loomis uses her to lure Michael into a trap and he beats Michael while shouting for him to die. While this technically stops Michael's killing spree for the night, as he is taken to the police department in his weaken weakened state, Loomis suffers a stroke in the process and is incapaciated, and thus absent and incapable of preventing [[spoiler:Wynn bursts him from busting Michael out of jail and abducts abducting Jamie, with Loomis failing to stop him permanently (as he had intended) and being unable to protect Jamie.]]
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* KilledOffScreen: [[spoiler:In the ''H20'' timeline, he dies off-screen a few years before the events of the film.]]
* MakeSureHesDead: In the second film, after Ben Tramer (dressed up similar to Michael) is killed by an officer, Loomis goes with Deputy Gary Hunt to inspect the corpse. Given that dental records will take hours to confirm, Loomis tells Hunt that they have to assume Michael is still alive and continue looking for him.
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* MakeSureHesDead: In the second film, after Ben Tramer (dressed up similar to Michael) is killed by an officer, Loomis goes with Deputy Gary Hunt to inspect the corpse. Given that dental records will take hours to confirm, Loomis tells Hunt that they have to assume Michael is still alive and continue looking for him.
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* ThereIsNoKillLikeOverkill: In ''II'', Loomis realizes that bullets will not be enough to permanently put down Michael and resorts to blowing them both up in an explosion to end his killing spree.
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* AndThenWhat: In ''5'', Loomis asks Michael what he thinks will happen if he succeeds in murdering his entire family and gives him an answer.
--> '''Dr. Loomis:''' You think if you kill them all it will go away. It won't.
--> '''Dr. Loomis:''' You think if you kill them all it will go away. It won't.
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* SayMyName: In ''4'', Loomis screams out Michael's name after he comes outside and is looking for him.
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* BoomHeadshot: Tries to shoot Michael in the head, but is stopped.
* CaptainObvious: Comes off as this when he asks Hawkins if Michael, his murderous patient, has killed again.
* EarnYourHappyEnding: In this continuity, Loomis played a key role in getting his patient recaptured, advocated for his death, and died peacefully with Michael still institutionalized. Even though Michael later gets out, Loomis will remain one of the few characters from the original film to not get murdered in a sequel.
* CaptainObvious: Comes off as this when he asks Hawkins if Michael, his murderous patient, has killed again.
* EarnYourHappyEnding: In this continuity, Loomis played a key role in getting his patient recaptured, advocated for his death, and died peacefully with Michael still institutionalized. Even though Michael later gets out, Loomis will remain one of the few characters from the original film to not get murdered in a sequel.
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* OnceDoneNeverForgotten: Based on comments by both Meeker in ''4'' and an officer in the Producer's Cut of ''Curse'', Haddonfield law enforcement has never forgotten Loomis's role in raising awareness of Michael being on the loose, with his rhetoric even being dismissed as "ghost stories".
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* SenselessSacrifice: Averted. Although in both the original series and the ''H20'' timeline, Loomis's attempt to blow Michael and himself up fails to kill either of them, it does succeed in stopping Myers from killing people for the time being.
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* SixthRanger: To the Haddonfield police.
* TheSmartGuy: Loomis is this compared to most other people, as he constructs plans to defeat Michael and is the most intoned with what the latter's motives are. He warned state trooper Terrence Gummell to stay away from a seemingly dead Michael in ''II'', just before the latter slashed Gummell's throat, and knew that Michael was going back to Haddonfield as soon as he learned he was out of his coma in ''4''.
* TheSmartGuy: Loomis is this compared to most other people, as he constructs plans to defeat Michael and is the most intoned with what the latter's motives are. He warned state trooper Terrence Gummell to stay away from a seemingly dead Michael in ''II'', just before the latter slashed Gummell's throat, and knew that Michael was going back to Haddonfield as soon as he learned he was out of his coma in ''4''.
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* BloodSplatteredWarrior: He has blood on his head and face in ''4'' and ''5'' after physical confrontations with Michael.
* TheCavalryArrivesLate:
** [[spoiler:Loomis, after warning Tina not to leave the clinic for the Tower Farm party, arrives there with officers and paramedics and is able to save Jamie and Billy from Michael, but only after the latter has already killed Tina.]]
** [[spoiler:In the sixth film, Loomis arrives at the scene of Jamie's murder after being spurred into action by her pleading for his help over the radio. This is notably averted in the Producer's Cut where Jamie survives her encounter with Michael and is unconscious at the hospital when Loomis visits her.]]
** [[spoiler:Loomis, after warning Tina not to leave the clinic for the Tower Farm party, arrives there with officers and paramedics and is able to save Jamie and Billy from Michael, but only after the latter has already killed Tina.]]
** [[spoiler:In the sixth film, Loomis arrives at the scene of Jamie's murder after being spurred into action by her pleading for his help over the radio. This is notably averted in the Producer's Cut where Jamie survives her encounter with Michael and is unconscious at the hospital when Loomis visits her.]]
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* YankTheDogsChain: ''Halloween: The Curse of Michael Myers'' gives Loomis much closure after what he's been through in previous installments. Michael has been gone for the longest period since the series started, allowing Loomis to retire. After he has "buried the ghosts", his physical scars are gone, and he has a new desire to write a manuscript, [[spoiler:he gets involved in trying to stop Michael's latest spree and is possibly killed by him in the Theatrical Cut.]]
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* YankTheDogsChain: The selfless doctor can't seem to catch a break for his troubles.
** In the fourth film, after being assaulted by Michael, an injured Loomis gets to watch him seemingly be killed by Meeker and the state troopers, and later voices his satisfaction to know that he is in "hell". For the first time, it appears that he has killed him and with little personal cost. [[spoiler:That makes the reveal that Jamie has stabbed her stepmother all the more tragic, as Loomis has lived to see the Main/StartOfDarkness begin again.]]
** ''Halloween: The Curse of Michael Myers'' gives Loomis much closure after what he's been through in previous installments. Michael has been gone for the longest period since the series started, allowing Loomis to retire. After he has "buried the ghosts", his physical scars are gone, and he has a new desire to write a manuscript, [[spoiler:he gets involved in trying to stop Michael's latest spree and is possibly killed by him in the Theatrical Cut.]]
** In the fourth film, after being assaulted by Michael, an injured Loomis gets to watch him seemingly be killed by Meeker and the state troopers, and later voices his satisfaction to know that he is in "hell". For the first time, it appears that he has killed him and with little personal cost. [[spoiler:That makes the reveal that Jamie has stabbed her stepmother all the more tragic, as Loomis has lived to see the Main/StartOfDarkness begin again.]]
** ''Halloween: The Curse of Michael Myers'' gives Loomis much closure after what he's been through in previous installments. Michael has been gone for the longest period since the series started, allowing Loomis to retire. After he has "buried the ghosts", his physical scars are gone, and he has a new desire to write a manuscript, [[spoiler:he gets involved in trying to stop Michael's latest spree and is possibly killed by him in the Theatrical Cut.]]
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* PresentAbsence: The 2018 film and ''Kills'' both take place on the first night of Michael being free from his incarceration since the events of the first film. Between both installments, Loomis is mentioned by Laurie, Sartain, Hawkins, and Marion, who all knew him and cite his knowledge or actions in reference to Michael.
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* BeingWatched: In ''5'', Loomis enters the Myers house and talks to Michael as he walks around under the assumption that his former patient is there and observing him from the shadows. [[spoiler:While Michael isn't, the Man in Black is.]]
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* ThirdPersonPerson: He replies this way to Marion in ''2'' after she recounts his encounter with Michael and he reminds her that he had previously told her that Myers was inhuman.
-->"Someone should have listened to me earlier."
-->"Someone should have listened to me earlier."
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* WhatYouAreInTheDark: [[spoiler:Whether it was when he signaled for Laurie to leave before he tried to kill Michael and himself in ''II'', offering his life to Michael in exchange for him leaving Haddonfield alone in ''4'', or when he was spurred to come to Jamie's aid even after retirement in ''Curse'', Loomis constantly shows his selflessness without the need for public acknowledgement or adulation.]]
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%%* AlasPoorVillain: [[spoiler:Loomis has this reaction at the end of the Producer's Cut of ''Curse'' as he stands over what appears to be Michael's body.]]
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%%zce* TheScream: [[spoiler:Does this at the end of both the fourth and sixth films.]]
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I hid a couple examples that I feel need more context.
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* AlasPoorVillain: [[spoiler:Loomis has this reaction at the end of the Producer's Cut of ''Curse'' as he stands over what appears to be Michael's body.]]
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* TheScream: [[spoiler:Does this at the end of both the fourth and sixth films.]]
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* AlasPoorVillain: [[spoiler:Loomis has this reaction at the end of the Producer's Cut of ''Curse'' as he stands over what appears to be Michael's body.]]
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* NotTooDeadToSaveTheDay: The suspense of the second film's climax is Loomis being stabbed by Michael and seemingly being deceased as Laurie has to fend for herself. Instead, he recovers and allows her to safely leave while he blows Michael and himself up, ultimately ending the 1978 killing spree.
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* TheScream: [[spoiler:Does this at the end of both the fourth and sixth films.]]
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* DramaticIrony: In ''4'', Loomis leaves the Meeker house to guard the Carruthers house on the premise that Michael may search for Jamie there. [[spoiler:After he leaves, Michael appears in the house and murders almost everyone, leaving Loomis unable to protect Jamie until he catches her outside alone.]]
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* FaceDeathWithDignity: In ''Halloween II'', as he prepares to blow himself up with Michael, Loomis stands calmly and merely tells Michael that it's time as he sets off his lighter.
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* ThePlan: [[spoiler:After Michael kills Tina in ''5'', Loomis constructs a plan at the Myers house that entails luring Michael there with the promise of Jamie being present and brutalizing him to the point of death after Myers is tranquilized and caged. Though he is not able to kill him, Loomis does singlehandedly bring a permanent end to his killing spree for the night.]]
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* SavedToEnslave: Implied. [[spoiler:In the Producer's Cut of ''Curse'', Wynn tells his men to leave Loomis after they knock him unconscious from behind. Later, after a dying Wynn is found by Loomis, the former grabs his hand and transfers the Thorn symbol to his wrist with the intention of him being the new person in charge of guarding Michael. Wynn could have had his men kill Loomis, but possibly wanted to keep him alive in case he needed another person to care for Michael, even if it was against Loomis's will.]]
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* IKnewIt: In-Universe example. After shooting Michael off a balcony at the end of the original film, Loomis looks surprised for a moment before adopting a look that shows he knew Myers was supernatural.
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* MirrorCharacter: [[spoiler:Loomis and Terrence Wynn are both doctors who have an interest in Michael and have known him since his days at Smith's Groove. They clash over their key difference of Loomis wanting to stop Michael's evil and Wynn wanting to continue it.]]
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I removed two unneeded spaces.
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* GoMadFromTheRevelation: [[spoiler:This seems to happen to him at the end of ''4'', as he screams horrifically when seeing Jamie after she stabbed her stepmother in a seeming realization that evil will live on even if Michael is finally killed permanently.]]
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* MakeSureHesDead: In the second film, after Ben Tramer (dressed up similar to Michael) is killed by an officer, Loomis goes with Deputy Gary Hunt to inspect the corpse. Given that dental records will take hours to confirm, Loomis tells Hunt that they have to assume Michael is still alive and continue looking for him.
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* ADayInTheLimelight: ''Halloween: Sam'', taking place in the ''H20'' timeline, expands on the doctor's past in a way the films never did.
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* ADayInTheLimelight: ''Halloween: Sam'', taking place in the ''H20'' timeline, expands on the doctor's past in a way the films never did.
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* ADayInTheLimelight: ''Halloween: Sam'', taking place in AintTooProudToBeg: In ''5'', Loomis pleads with Tina to stay at the ''H20'' timeline, expands on the doctor's past clinic as he shares Jamie's belief that she is in a way the films never did.danger.
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* BothSidesHaveAPoint: In ''4'', Loomis goes against Meeker's wishes and confirms to a bunch of Haddonfield men that it was Michael Myers who murdered the police force. While Meeker is upset because the group may hurt innocent people unintentionally while trying to get Myers, Loomis points out that Meeker has no police force and they need all the help they can get. Considering that the men both kill the wrong person ''and'' help to keep Jamie safe from Michael, the two both had justification for their beliefs.
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* ExploringTheEvilLair: Anytime Loomis goes back to the Myers house can be seen as this, as he's one of the few people that knows Michael likes going back there from time to time. [[spoiler:In the fifth film, as Loomis is looking around and talking to Michael, who isn't there, he is unknowingly being watched by the Man in Black.]]
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* VocalEvolution: In ''5'' and ''Curse'', Loomis's voice is noticeably more hoarse than it was in the previous movies.
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* VindicatedByHistory: In-Universe example. In the 40 years since the first film, Hawkins has come to believe Loomis was right and Michael should have died.
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* MostWritersAreWriters: In the sixth film, he is seen writing a manuscript about his past with Michael.
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* PerpetualFrowner: Considering how often he has to contend with stopping a serial killer, Loomis is seldom seen smiling. One of the few instances is during the sixth film when he's visited by Wynn.
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* SoleSurvivor: Tends to be one of the few people that survives Michael's killing sprees, as the latter never targets him and only attacks him when he's getting in his way.
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* AdaptationalVillainy: In the remake, he at least starts off a relatively decent man, however, it's shown that he profits off of writing about Michael's murders; something the original had virtually no interest in. By the second installment, he's devolved into a cold-hearted and greedy writer, can qualify as the sequel's secondary antagonist, [[spoiler:until the end]].
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* AdaptationalJerkass: While dedicated to stopping Michael from his killing spree, this version of Dr. Loomis is a lot more abrasive, gruff, and temperamental in comparison to his more soft-spoken, almost grandfatherly demeanor in previous iterations. And this is just the first movie, as he slips into AdaptationalVillainy by the sequel.
* AdaptationalVillainy: In the remake, he at least starts off a relatively decent man, however, it's shown that he profits off of writing about Michael's murders; something the original had virtually no interest in. By the second installment, he's devolved into a cold-hearted and greedy writer, who can qualify as the sequel's secondary antagonist, [[spoiler:until the end]].
* AdaptationalVillainy: In the remake, he at least starts off a relatively decent man, however, it's shown that he profits off of writing about Michael's murders; something the original had virtually no interest in. By the second installment, he's devolved into a cold-hearted and greedy writer, who can qualify as the sequel's secondary antagonist, [[spoiler:until the end]].
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* MysteriousPast: In the original films, not much is known about Loomis' background other than his relationship with Michael.
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* WeaponOfChoice: [[spoiler:The ending of ''Halloween 4'' sees Jamie use a pair of scissors when she attacks her stepmother.]]
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* AdaptationalJerkass: In the remake, he at least starts off a relatively decent man, however, it's shown that he profits off of writing about Michael's murders; something the original had virtually no interest in. By the second installment, he's devolved into a cold-hearted and greedy writer, can qualify as the sequel's secondary antagonist, [[spoiler:until the end]].
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* AdaptationalJerkass: AdaptationalVillainy: In the remake, he at least starts off a relatively decent man, however, it's shown that he profits off of writing about Michael's murders; something the original had virtually no interest in. By the second installment, he's devolved into a cold-hearted and greedy writer, can qualify as the sequel's secondary antagonist, [[spoiler:until the end]].
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!!Samuel Loomis
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/img_0946.JPG]]
One of the main protagonists of the ''Halloween'' film series. Loomis met a six-year-old Michael Myers after he killed his older sister and became his psychiatrist. After Michael escapes to resume his killing spree, Loomis selflessly sets out to stop him.
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[[foldercontrol]]
[[folder:Pre-2018 timelines]]
Michael's [[TheShrink psychiatrist]], Dr. Loomis is forced multiple times to track Michael down in an attempt to stop him from killing people. And he's pretty badass at doing it.
[-Played by: Creator/DonaldPleasence (''[[Film/{{Halloween 1978}} I]]'' to ''[[Film/HalloweenII1981 II]]'' and ''[[Film/Halloween4TheReturnOfMichaelMyers 4]]'' to ''[[Film/HalloweenTheCurseOfMichaelMyers The Curse]]''), Creator/TomKane (''[[Film/HalloweenH20TwentyYearsLater H20]]'') (Voice Only)-]
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* TenMinuteRetirement: Loomis retires during the six-year TimeSkip in ''Film/HalloweenTheCurseOfMichaelMyers'', but comes out of it once he hears Jamie calling for his help over the radio.
* ActorAllusion: Loomis being a WWII veteran who had been a POW of the Luftwaffe in the ''H20'' canon comic series is possibly a nod to his actor's previous role in ''Film/TheGreatEscape'', where he had also played a British POW in a Luftwaffe POW camp (though unlike Colin Blythe, Loomis survives the film).
* ADayInTheLimelight: ''Halloween: Sam'', taking place in the ''H20'' timeline, expands on the doctor's past in a way the films never did.
* AllForNothing:
** Loomis spends the fourth film trying to stop Michael from killing people. After he hitches a ride with Reverend Sayer, the latter warns him that damnation cannot be killed like a man can. [[spoiler:Although Michael is eventually stopped thanks to Meeker, Jamie stabs her stepmother and seemingly inherits the damnation that Sayer warned Loomis about, the latter being the first person to discover her attack. Since the core reason for Loomis wanting Michael is to prevent him from hurting others, he failed to achieve that goal per Jamie following in her uncle's footsteps.]]
** The fifth film has Loomis trying to get Jamie to use her telepathic powers to help him find Michael. She eventually agrees to his plan and Michael chases after Jamie. Loomis uses her to lure Michael into a trap and he beats Michael while shouting for him to die. While this technically stops Michael's killing spree for the night, as he is taken to the police department in his weaken state, [[spoiler:Wynn bursts him out of jail and abducts Jamie, with Loomis failing to stop him permanently (as he had intended) and being unable to protect Jamie.]]
* AloneWithThePsycho: A scene in ''Halloween 5'' has Loomis confronting Michael by himself and making a plea for him to have a positive relationship with Jamie.
* AmbiguousSituation: Michael never tries to kill Loomis. At worst, he will attack him in a non-fatal way, and this only happens when he gets in the way of his going after Laurie or Jamie. Some have speculated that this is due to Michael having some respect for Loomis as the only person who was able to understand how evil he was. Others theorize Michael has come to, in his own twisted way, care about Loomis because of how long they have known each other and consistently sparing him from his killing spree is the closest thing to kindness he can show another person.
* AntiHero: Loomis is this on his worst days, such as in ''Revenge of Michael Myers'' where he was more than willing to use little Jamie Lloyd as bait to capture Michael Myers.
* ArchEnemy: No matter where Michael goes, Loomis will be there to stop him.
* AuthorityInNameOnly: As Dr. Hoffman explains, Loomis's role as Michael's psychiatrist is more "ceremonial than medical".
* AxCrazy: Dealing with Michael has caused a significant amount of SanitySlippage, and Loomis himself as shown to have fits ranting and raving, shooting wildly at Michael in attempts to kill him. At the end of ''Return of Michael Myers'', he even attempts to shoot Jamie (granted, she had stabbed her adoptive mother, but still).
* BackInTheSaddle: At the start of ''6'', Loomis has been retired for years due to a stroke and Michael being gone. All that changes when he hears Jamie calling over the radio for his aid, and he becomes one of the few trying to protect the Strodes and Jamie's baby from Michael.
* BadLiar: Loomis lies to Jamie when he affirms that they’ll be safe after pulling the alarm at her school. She sees through his claim instantly.
* BadassBookworm: Michael's arch-enemy and a professional psychologist.
* BadassLongcoat: An impressively stylish beige one.
* BaldHeadOfToughness: The series' leading badass has not a hair upon his head. He's bald and keeps going despite all the beatings and injuries he endures.
* BerserkButton: Whenever someone doubts that Michael is as dangerous as Loomis says he is, expect him to respond in a shouting tone.
* BeyondRedemption: He tried for years to help Michael overcome his violent urges. However by the main events of the first film, Loomis eventually admits that it was all in vain, and that Michael has to be stopped by any means necessary.
* BigDamnHeroes: In the original film, just as Laurie is struggling against Michael and she falls to the floor after ripping off Michael's mask, Loomis runs up the staircase of the Doyle house and sees Michael donning his mask again. Loomis shoots him away from her and then enough times for him to fall off a balcony.
* BigGood: He is the face of the force of good in the franchise, for being Michael's ArchEnemy.
* BigNo: He gives one out [[spoiler:in the ending of ''Halloween 4'' after realizing that Jamie has stabbed her stepmother]].
* BrutalHonesty: While trying to convince Jamie to use her powers to help him find Michael in ''5'', Loomis bluntly tells her that her tears won't stop Michael from killing her.
* BusCrash: Due to the death of Donald Pleasance, Dr. Loomis is stated to have died in between films in ''H20'' and the 2018 installment.
* TheCallKnowsWhereYouLive: ''Halloween: The Curse of Michael Myers'' begins with Loomis living alone when Terrence Wynn comes to visit him and request that he come back to Smith's Grove. Loomis declines and states his content with being retired. [[spoiler:Then he learns via radio that Jamie Lloyd is seeking his help to come and save her again.]]
* CareerEndingInjury: The stroke he has while beating Michael causes him to retire from Smith's Grove.
* CantStayNormal: Although retired at the start of the sixth film, Loomis is convinced that his aid is needed to defeat Michael once more.
* CavalryBetrayal: Invokes, but then subverts this when he appears to betray Jamie by offering her to Michael when he's really holding her to lure him into a trap.
* CassandraTruth: His entire career in regards to Michael is this. No one ever listens to his warnings about the danger Michael poses to society until it's too late. Though this is actually not as bad as in most cases; in both the first two movies and the fourth movie, the cops at least heed his warnings and take some action. Unfortunately, it isn't enough.
* CelibateHero: Throughout the original film series, Loomis is never shown having any interest in a love life. The comic ''Halloween: Sam'' details his romantic interest in Elizabeth Worthington, who he meets during WWII and last sees five years before Michael stabs Judith.
* CharacterNarrator: Loomis narrates the opening of the Producer's Cut of the sixth film.
* TheChosenOne: [[spoiler:In the Producer's Cut of ''6'', Wynn asserts that it has always been Loomis's destiny to join the Cult of Thorn and that he needs him.]]
* ChronicHeroSyndrome: Loomis cannot bring himself to stay out of the hunt for Michael. If he even so much as suspects Michael is in Haddonfield, he will travel to find and stop him, no matter his affliction.
* CoolOldGuy: As he got older, he didn't get any weaker. He wailed on Michael with a two-by-four... while in the middle of having a stroke!
* CombatPragmatist: Loomis knows Michael cannot be either seriously harmed or killed without weaponry and will use anything that can help accomplish this. He sets off the explosion in ''Halloween 2'' with the estimation that Michael has never been caught in fire and despite it not killing him as Loomis intended, the gambit succeeds in ending his rampage for the night.
* TheConfidant: In the fifth film, as Jamie is having psychic visions of where Michael is, Loomis tries to convince her to use them to help him find Michael and attempts to be her confidant by being more attentive to her pleas than others, but she shuts him out.
* ConspicuousGloves: In ''4'' and ''5'', Loomis wears a pair of black gloves as to hide the scarring on his hands from being exposed.
* CoveredWithScars: After trying to kill Michael in a fire in the second film, he shows up in ''4'' and ''5'' with a limp and burn scars on one cheek and his hands, which he hides with ConspicuousGloves. His scars disappear in the sixth film as a result of getting plastic surgery and skin grafts.
* CrazyPrepared: In the fifth film, he set a trap involving a heavy, metal chain net attached to a rope to drop on Michael. Then he shoots him 3-4 times with a tranquilizer gun, before it's snatched away. ''Then'' he grabs a 2x4 and beats Michael with it. It works.
* CreepyGood: In ''4'', ''5'', and ''6'', he's still the BigGood, but now he is covered in burn marks (less so in ''6''), walks with a limp and is undergoing SanitySlippage.
* CrutchCharacter: Loomis, due to knowing Michael better than anyone else, is more adept at defeating him than other characters and has to be written in a way that does not allow him to encounter Michael before the film's conclusion. This is usually accomplished by having Loomis travel around in search of him and only finally find Michael as he is close to killing either Laurie or Jamie. ''4'' subverts this twice by having Loomis and Michael meet multiple times before the movie ends and having Michael's final defeat come from Meeker and other officers.
* DemotedToExtra: In the sixth film.
* {{Determinator}}: He'd have to be to keep up a conflict with [[ImplacableMan Michael]].
* DyingMomentOfAwesome: Subverted. In ''Hallloween II'', he shot Michael in the eyes and tried to blow both himself and Michael to bits. Fortunately, Loomis lived. Unfortunately, ''so did Michael''.
* EarnYourHappyEnding: While Loomis never outright kills Michael due to the ongoing nature of the ''Halloween'' franchise not allowing its antagonist to die, Loomis is either directly or heavily involved with Michael's defeat in each film of the original series.
* EasilyForgiven: [[spoiler:Despite pointing a gun at a possessed Jamie with the clear intent of shooting her in ''4'', no one seems to have a problem with him becoming her psychiatrist prior to the events of the fifth film.]]
* ExperiencedProtagonist: By the events of the first film, Loomis has known Michael for fifteen years and is the character with the most understanding of him.
* FlawExploitation: Loomis uses Michael's obsession with killing Jamie and slow walking to lure him into a trap he set up in the Myers house.
* {{Foil}}:
** ''Film/Halloween1978'':
*** To Leigh Brackett. Both are middle-aged men who are trying to stop Michael from killing people in Haddonfield, but whereas Brackett is skeptical of Michael returning after such a long time, Loomis is confident that he is going to strike that night. Despite being the one who is a member of law enforcement and whose job it is to protect people, Brackett ends up not encountering Michael at all that night while Loomis not only saves Laurie twice but ends Michael's killing spree altogether for the time being.
*** Loomis and Laurie are juxtaposed in their dynamics with Michael. Loomis pursues Michael to Haddonfield while Michael pursues Laurie. Laurie has never met Michael and is doubtful of the existence of a "boogeyman" while Loomis has known him for years and very much believes he is the embodiment of evil. In the final act of the film, while Laurie has a drawn out encounter with Michael and is injured in the process, Loomis simply shoots him and ends the film completely unharmed.
** ''Film/Halloween4TheReturnOfMichaelMyers'':
*** Loomis and Jamie are connected by being associated with Michael, but Loomis is not related to Michael and has years of experience with him while Jamie is related to Michael and had never met him before the events of the film. Loomis is able to fight back against Michael, albeit with weaponry, while Jamie has to be protected due to her age. [[spoiler:Loomis is unquestionably on the side of good while Jamie seems to be this way as well, only for her to stab her stepmother in a first act of villainy.]]
*** To Ben Meeker. Both are older men who want to stop Michael, but Meeker wants the matter to be dealt with by the police while Loomis has no problem informing the public of Michael's return. They both leave the Meeker house before Michael starts killing, but Meeker leaves to stop disgruntled vigilantes in town from hurting someone while Loomis leaves to stand guard over the Carruthers house in the event that Michael returns. Loomis plays no role in Michael's final defeat in the film's conclusion while Meeker is at the center of it.
** ''Film/Halloween5TheRevengeOfMichaelMyers'': Loomis and Tina share an affection for Jamie and an interest in being there for her. But while Loomis takes Jamie's convulsions, and the warnings that come with them very seriously, Tina does not and writes them off on account of Jamie's age. Although both leave Jamie's side at various points in the film, Loomis leaves to investigate where Michael is for the purpose of protecting her while Tina leaves for selfish reasons such as wanting to go to a party or hang out with her friends. Michael never targets Loomis, but stalks Tina as a means of getting closer to Jamie. [[spoiler:Both also share a similar fate by the end of the film of being seemingly deceased after encountering Michael.]]
** ''Film/HalloweenTheCurseOfMichaelMyers'': To Kara Strode. Both are interested in protecting Jamie's baby Steven from Michael and are the few adults that Tommy trusts with the baby. While Loomis lives by himself, Kara resides with her son, parents, and brother. The Cult of Thorn kidnaps Kara, but voluntarily leaves Loomis instead of imprisoning him as well. In the Producer's Cut, Loomis never encounters Michael while Kara does multiple times.
* FreakOut: [[spoiler:Screams hysterically at the sight of a possessed Jamie in ''4'', and after being marked with the Thorn symbol in the Producer's Cut of the sixth film.]]
* FriendToAllChildren: He tries to protect any and all children from Michael.
** In the first film, he scares Lonnie away from going into the Myers house when his friends are daring him to go inside.
** In the fourth and fifth films, he protects Jamie from Michael by any means necessary. Though he loses a bit of this when he tries to use her as bait.
* {{Foreshadowing}}: Loomis is with Meeker when he learns of a coffin being removed from the cemetery and Loomis relays this to Jamie, asking her what she thinks Michael is going to use it for. [[spoiler:The coffin is seen in the final act of the film in the Myers house as Jamie tries to evade Michael and lays in it as she asks to see his face.]]
* GoodIsNotSoft: Loomis is a major example of this trope, given his willingness to kill Michael and threaten those that get in his way of putting him down.
* GreaterScopeParagon: He is this in the films made after his actor Donald Pleasance's death, as he was the BigGood of the films and references to him were made in his absence following the character's BusCrash.
* GunNut: His WeaponOfChoice for the first two films is [[RevolversAreJustBetter a Smith and Wesson Model 15]], but switches over to a Smith and Wesson 639 pistol with pearl grips for his next two appearances.
* HandicappedBadass: In the Thorn trilogy, he has a limp thanks to injuries he took in the explosion in the second film.
* HeroWithBadPublicity: Implied to be disliked by Haddonfield citizens and cops in ''Halloween 4'' due to his association with Michael's killing spree in the first two films, despite Loomis doing his best to stop him.
* HeroicSacrifice: Tries to pull this off in ''Halloween 2'' to kill himself and Michael, but it fails and they both survive.
* HeroicSecondWind: Falls to the ground and appears dead after being stabbed by Michael in ''Halloween 2'', but recovers to get up and help Laurie.
* HeWhoFightsMonsters: Dangerously comes close in becoming this as he starts to use unethical tactics to fight Michael in the later films.
* HistoryRepeats:
** Seems to be what goes through Loomis's mind at the end of ''Halloween 4''. [[spoiler:He knows that Michael first killed as a child on Halloween night and Loomis sees the sight of the bloodstained Jamie after she has stabbed her stepmother twenty-five years later, reacting by screaming in horror after believing Michael was finally gone.]]
** In the events leading up to the first film, Loomis was assigned to the mute Michael after the latter stabbed his sister and by his own admission was the only one who recognized what he truly was. In ''Halloween 5'', Loomis is assigned to the mute Jamie [[spoiler:after she stabbed her stepmother]] and has other staff unable to recognize her true disability, such as when a doctor incorrectly concludes that Jamie is dying during one of her convulsions.
* HoldingHands: A hallmark of Loomis helping someone is that he holds their hand while they are together.
** In the second film, after Michael gets back up, Laurie grabs onto Loomis in fear and leads him away by taking his hand.
** In the fourth film, when Loomis finds Jamie alone and requests she lead them to the schoolhouse for safety from Michael, Loomis holds her hand the entire time they walk there and while they go inside.
* HopeBringer: After getting Steven, Tommy is so relieved to see Loomis that he thanks God.
* HumbleHero: In the sixth film, Loomis makes a self-deprecating joke about his previously-scarred appearance frightening children.
* HurtingHero: By the time of ''Halloween 4'', Loomis has spent ten years watching over the patient he unsuccessfully tried to stop from killing people and has had to look at his scars from the night that haunts him every day. But despite his physical pain, and his past failure, he still does everything he can to save Jamie from Michael.
* IgnoredExpert: Nobody takes his warnings about Michael seriously until it's too late. To be fair, asserting that a patient is or has "pure evil" isn't likely to convince too many people.
* ImprovisedWeapon: Usually when his gun is unavailable.
** Out of ammo and wounded, Loomis uses the gas valves in the hospital and a lighter to put Michael's murder spree to an end for the night in ''Halloween 2''.
** When Michael grabs his tranquilizer gun, and shows that it hasn't fully-weakened him, Loomis rips a plank of wood off the walls of the Myers house and begins beating Michael with it.
* InSeriesNickname: The few times when his first name is used, its shortened to "Sam".
* IntergenerationalFriendship: In the sixth film, Loomis refers to the young adult Tommy as an "old friend" when Wynn asks him who he is.
* ItIsDehumanizing: As per his not-unjustified belief that Michael is [[MadeOfEvil evil incarnate]], he calls Michael "it" on more than one occasion.
* JerkWithAHeartOfGold: He has his moments (loudly and more rudely telling Nurse Marion to stay quiet when she was not so loud in voicing a concern in the second movie - him causing the accidental death of Ben Tramer, though out of desperation - or him going off the deep end and cornering a traumatized Jamie Lloyd in ''Revenge''), but he's definitely on the side of good.
* JumpScare:
** On the receiving end of one in the original film when Brackett comes behind him and grabs him.
** Gives one to Jamie when he comes up from behind her after she has run away from Michael in the fourth film. He gives her another one in ''5'' when she and Billy are fleeing Michael after his unsuccessful attempts to kill them with his car.
* JumpedAtTheCall: The second Loomis finds out Michael is free and out on a killing spree, Haddonfield is where he will be!
* JustInTime: Comes to Laurie's aid just as she is being attacked by Michael in the original.
* TheLeader: Loomis is able to coerce multiple sheriffs and policemen to follow along with his plans. Brackett looks for Michael with him during the first two films, Meeker abides by his plan of finding Jamie in the fourth film and a plot involving using Jamie as bait in the fifth film.
* LegendaryInTheSequel: He goes from having to introduce himself to the Haddonfield sheriff in the original to being instantly recognized by the new sheriff ten years later in the fourth film.
* LightIsGood: In contrast to Michael's dark coveralls, he wears a biege trenchcoat.
* LimitedWardrobe: In the original film series, Loomis is always seen wearing a variation of a biege trenchcoat and a suit until his retirement.
* LockedOutOfTheLoop: Especially when it comes to important information about Michael.
** Because the records were sealed until after the events of the first film, Loomis never knew that Michael had a younger, still-living sister until Marion Chambers brought him up to speed on the governor unsealing them.
** Loomis confronts Hoffman for not notifying him that Michael was being transferred.
* MadeOfIron: Survived a large explosion, has been tossed around, slashed and stabbed by Michael, and even beat Michael Myers down while in his 70's and having a stroke (which he survived).
* {{Misblamed}}: In-universe, Loomis is blamed by Sheriff Brackett for Michael's rampage, despite the fact that Loomis did all he could to make sure Michael never saw the light of day again.
** On top of that, he's a lowly psychiatrist. If Brackett wants to blame anyone it should be Loomis' bosses, because they refused to listen to how dangerous Michael was.
* MyGreatestFailure: In the Producer's Cut of the sixth film, Loomis admits trying to understand Michael was this for him.
-->'''Loomis:''' For fifteen years, I've been obsessed to find out what was going on inside of him. It's been my life work, and my ultimate failure.
* NeverGotToSayGoodbye: To [[spoiler:Jamie, and presumably Laurie as well.]]
** [[spoiler:Jamie tries contacting Loomis through a radio station while she is fleeing Michael. Loomis hears her but cannot respond, and never gets to speak to her directly due to her being killed by Michael in the theatrical cut and shot in the head by Wynn in the Producer's Cut.]]
** [[spoiler:Laurie is killed offscreen in a car accident before the events of Halloween 4, meaning that Loomis never got to say goodbye to the young woman he protected from Michael 10 years ago before her actual death.]]
* NoGoodDeedGoesUnpunished: Loomis, through no fault of his own, encounters a homicidal boy who he tries for years to reach. After Michael breaks out, Loomis goes out of his way to stop him from killing more people and his reward is being written off as hysterical when he warns people, being wounded by Michael almost every time they see each other, and sometimes even being blamed for what Michael does.
* NonProtagonistResolver: Although Laurie is the one the audience spends the most time with in ''Halloween'', Loomis resolves the conflict of the film by shooting Michael as he tries to finish her off.
* NotAfraidToDie: Shows this consistently throughout the series.
** Loomis, without backup from Brackett, charges into the Doyle house and shoots Michael as he sees the latter attacking Laurie. He then confronts Michael in another room, alone, before shooting him.
** When Loomis lights the fire at the hospital that blows himself and Michael up in the second film, he does so without any sign of second-thought or hesitation, just calmly telling Michael that it's time.
** In the fourth film, when he discovers Michael at the filling station, he comes over to him and makes a plead for him to leave the people of his hometown alone, even offering his own life.
** Loomis dismisses the orders of officers so that he can confront Michael alone. When they meet, Loomis comes close to Michael, who is holding a knife, and while he himself is unarmed with any immediate way to defend himself.
* NotQuiteDead: Along with Michael, Loomis is severely burned and nearly killed in the explosion he set at the end of the second film.
* OffscreenTeleportation: Being thrown through a glass door at Jamie's school is where Loomis is last seen in ''4'' before Michael's defeat. The opening of ''5'' reveals that he was holding Jamie while Michael was being shot by Meeker, despite seemingly having no way of getting there as his car had been destroyed earlier in the movie.
* OhCrap:
** Loomis is shocked when Michael kills the Marshall in ''Halloween II'' as this is seemingly the first time he's ever actually seen Michael kill someone.
** [[spoiler:He screams horrifically when discovering that Jamie has stabbed her stepmother in the final scene of ''Halloween 4''.]]
* OlderHeroVsYoungerVillain: Loomis is old enough to Michael's father.
* OncePerEpisode: Loomis will often encounter Michael and after trying to speak to or attack him, be assaulted. This includes Loomis being stabbed with a scalpel after a failed attempt to shoot Michael in ''Halloween II'', being thrown through a glass door by Michael in ''Halloween 4'', and being slashed across the chest and thrown to the ground in ''Halloween 5''.
* OnlyFriend: He seems to be this to Terrence Wynn, the only character in the original timeline to call him by his first name, as Wynn is not shown spending time with others in his free time. [[spoiler:Even after Wynn is revealed as the Man in Black, and Loomis displays a willingness to both denounce him as a monster and shoot him, Wynn never speaks ill of him and even wants him to join his cult.]]
* OnlyOneName: Most films omit his first name. The only exceptions in the original series are when Loomis introduces himself to Brackett in the first film and when Terrence Wynn calls Loomis "Sam" in the sixth film.
* PapaWolf: Though he never has children of his own he was willing to protect 17 year old Laurie at the cost of his own life and young Jamie afterwards.
* PassingTheTorch: ''Halloween 6'' writer Daniel Farrands stated his intent for Loomis to pass the torch of hunting Michael to Tommy in the film.
* PlatonicLifePartners: With Marion Chambers in the ''H20'' timeline, to such an extent that almost every scene that Marion appears in (within the first two films) is with Loomis. It is established in ''H20'' that Loomis was living with her at the time of his passing.
* ProperlyParanoid: Others viewed a young Michael as a disturbed boy who could not get too far in a minimum-security prison. Loomis viewed him as a monster carrying pure evil, just waiting to strike. Guess who was right.
* TheProtagonist: Of the original timeline of films, but one of two main contenders for this of the ''Halloween'' franchise as a whole, the other being Laurie Strode. Even when he does not personally appear, Loomis is still mentioned or given some homage that exceeds most other characters.
* PostVictoryCollapse: After beating Michael unconscious in the climax of ''5'', Loomis succumbs to his stroke and falls on top of him.
* RefusedByTheCall: Meeker initially refuses to believe Loomis when he warns him of Michael's return. It's only after Loomis notes the murders that have recently taken place that Meeker changes his mind.
* RetiredBadass: According to the original canon comic series (or in the ''H20'' canon), Loomis was a war veteran.
* RudeHeroNiceSidekick: This is his dynamic with Marion Chambers in the first two films. Marion is respectful of patients and law enforcement while Loomis openly dehumanizes Michael and will go against orders of higher figures of authority if he sees fit.
* SanitySlippage: Starts pretty quickly when he raves about how "the evil has gone" at the beginning of the first movie and eventually slips right down into full-blown bat shit fanatical madness' peak in ''The Revenge of Michael Myers'', where he uses Jamie as bait before beating Michael unconscious with a 2x4, screaming for him to die.
* ScarsAreForever: Subverted. Unlike ''4'' and ''5'', Loomis is not depicted with scars in the sixth film, the Producer's Cut explaining that he had surgery to get rid of them.
* ScrewTheRulesImDoingWhatsRight: In the second film, Loomis is ordered out of Haddonfield but chooses to ignore this to come to Laurie's rescue.
* SecretKeeper: Loomis and Marion are the only ones to know Laurie is still alive after she fakes her death in the ''H20'' timeline.
* SignificantWardrobeShift: Unlike the past four films, Loomis does not wear his trench coat while hunting Michael in ''6''. This is to illustrate that he has retired and moved on in the years since Michael and Jamie were last seen.
* SmartPeopleWearGlasses: He is seen wearing glasses at the start of the sixth film.
* TheStrategist: Loomis is often the only one who can come up with effective ways to stop Michael and the Haddonfield police sheriffs and officers tend to heed his plans.
* SupportingLeader: He spends most of the original hunting Michael down and gets top billing, but he isn't the lead character.
* SympathyForTheDevil: In the Producer's Cut of the sixth film, Loomis approaches Michael as he lays on the ground and with a mournful tone tells him that it's all over before he pulls off his mask and [[spoiler:realizes it's Wynn.]]
* TakeMeInstead: In the fourth movie, after encountering Michael at the diner, Loomis is perfectly willing to try this. Unsurprisingly, Michael doesn't take this offer.
-->"Don't go to Haddonfield. If you want another victim, take me. But leave those people in peace. Please, Michael? [''silence''] God damn you. [''starts shooting'']"
* TalkingToTheDead: [[spoiler:In the Producer's Cut of the sixth film, Loomis speaks to Jamie's corpse and admits he let her down.]]
* TalkingToThemself: In his first on-screen appearance in the sixth film, Loomis responds to a person over the radio inquiring if he is deceased.
* TaughtByExperience: After eight years of trying to reach him, Loomis realized that Michael was pure evil, and the main reason Loomis is such a threat to Michael is because of how long he's been around him.
* TheThingThatWouldNotLeave: He is viewed this way by Hoffman, who tells those transporting Michael's body that he hopes Loomis will either transfer, retire, or die after Michael is gone.
* ThisCannotBe: His initial reaction to seeing that Michael has disappeared after being shot off the balcony in the original film.
* ToBeLawfulOrGood: Loomis will choose to disobey the law if he knows listening to officers will impede his plots to stop Michael. In the second film, he points a gun to an officer's face as he drives him out of Haddonfield and fires a warning shot to get him to take him to Haddonfield Memorial Hospital.
* TogetherInDeath: [[spoiler:The ''Halloween: Sam'' comic sees Loomis die of a heart attack next to the corpse of his recently-deceased old friend Elizabeth Worthington.]]
* TookALevelInKindness: Is more calm in the sixth film than the prior installment.
* ToughLove: His treatment of Jamie in ''5''. He shouts at Jamie when she does not comply with his orders to reveal where Michael is by using her psychic link with him. Though this is harsh, he does it because he believes she is the only one who can truly help find where Michael is and he wants to find him to prevent Michael from killing others, including her. He also does take her feelings into account, as he specifically telephones Rachel after she senses Michael is around her and has officers to follow Tina when she refuses to stay at the clinic with Jamie.
* TragicHero: Loomis was just a normal psychiatrist who happened to encounter a child who murdered his sister for no reason besides him being pure evil and tries to stop him from continuing his killing sprees as an adult. For his troubles, Loomis has burn scars, a bad reputation among law enforcement, and walks with a limp.
* TragicKeepsake: The scars on his body remind him of the hospital explosion at the end of the second film.
* TwoFaced: Loomis has half of his face scarred in both ''4'' and ''5'' and it is implied that most of his body has scarring from the hospital fire.
* UncertainDoom: In ''The Curse of Michael Myers'', both cuts give uncertain fates for him as he reenters the abandoned Smith's Grove to finish Michael. The Theatrical Cut ends with his screaming with the implication Michael finally killed him, while the Producer's Cut [[spoiler: has him find Dr. Wynn on the floor in Michael's place, who passes the Curse of Thorn onto him as Michael escapes, much to Loomis' horror.]]
* UnintentionalBackupPlan: In the second film, Loomis tries to kill Michael by shooting him in the head. Out of bullets and subsequently stabbed, he ignites an explosion that succeeds in ending Michael's killing spree for the time being.
* VictoryByEndurance: [[spoiler: Loomis's win over Michael in ''5'' has him beating the latter until he loses consciousness, and he himself collapses a short time later.]]
* VillainKiller: Had ''Halloween II'' been the ending of the Michael Myers plot, as originally intended, Loomis would have been successful in killing Michael with the hospital explosion, albeit at the cost of his own life.
* WeakButSkilled: Because of his age and Michael's superhuman strength, Loomis can never defeat him in a fair fight, but uses his intelligence, strategy, and weaponry to combat his arch-nemesis. His victories are a triumph of brains over brawn.
* WeaponOfChoice: [[spoiler:The ending of ''Halloween 4'' sees Jamie use a pair of scissors when she attacks her stepmother.]]
* WellIntentionedExtremist: Although some of the things he does earn him repudiation, it's all meant to stop Michael from killing innocent people.
* WildCard: Loomis is on the side of good, but expect him to do just about anything to stop Michael.
** His holding an officer and Marion at gunpoint in the second film. He only does this after finding out Laurie and Michael are siblings and to get to the former before Michael can kill her.
** After Meeker orders Jamie be taken to a police station for her own safety, and officer Charlie Bloch agrees to comply with this order, Loomis locks Bloch and Jamie in the room while he confronts Michael alone.
* WhatTheHellHero: Loomis seems to get this at least once a movie - usually because of what Michael has done. Not fair in those cases, though, cause Loomis did everything possible to keep Michael locked up. However, Nurse Patsey rightfully calls him out when he is downright scaring Jamie in Halloween 5.
* WhyWontYouDie: Shouts for Michael to die as he beats him with wood in the fifth film.
* TheWorfEffect: [[spoiler:In the sixth film, Loomis is easily rendered unconscious by a hit to the back from Wynn's men.]]
* WouldHitAGirl: Implied by Loomis when he has Marion at gunpoint in ''Halloween 2''. [[spoiler:He has no qualms about Jamie's gender when he raises his gun to her after seeing that she has stabbed her stepmother.]]
* WouldHurtAChild: [[spoiler:During the ending of ''Halloween 4'', a terrified Loomis raises his gun to shoot Jamie after he realizes she has stabbed her stepmother. If Meeker had not wrestled the gun out of his hand, it is highly likely he would have shot Jamie.]]
* YankTheDogsChain: ''Halloween: The Curse of Michael Myers'' gives Loomis much closure after what he's been through in previous installments. Michael has been gone for the longest period since the series started, allowing Loomis to retire. After he has "buried the ghosts", his physical scars are gone, and he has a new desire to write a manuscript, [[spoiler:he gets involved in trying to stop Michael's latest spree and is possibly killed by him in the Theatrical Cut.]]
* YouAreWhatYouHate: Dr. Hoffman invokes this in Loomis's first scene in ''4'' when the latter warns him about Michael.
-->'''Dr. Hoffman:''' I've said this before. I think you're the one who needs mental help.
* YouCantGoHomeAgain: Tells a crying Jamie she cannot return to her house since Michael would come there for her.
* YouShallNotPass: Declares this to Bloch when the latter and Jamie try to leave the Myers house so he can insure Michael comes.
[[/folder]]
[[folder:Remake Duology]]
!!Doctor Samuel Loomis
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/samloomis_halloween2007.jpg]]
[-Played By: Creator/MalcolmMcDowell-]
A noted psychologist who treated Michael during his incarceration at Smith's Grove Sanitarium.
----
* AdaptationalJerkass: In the remake, he at least starts off a relatively decent man, however, it's shown that he profits off of writing about Michael's murders; something the original had virtually no interest in. By the second installment, he's devolved into a cold-hearted and greedy writer, can qualify as the sequel's secondary antagonist, [[spoiler:until the end]].
* AdaptationalWimp: In the Zombieverse sequel, [[spoiler:he chooses to confront Michael to save Laurie, but unlike in the last film and the original sequels, he does so unarmed, [[TooDumbToLive it goes well as one would expect]]]].
* AssholeVictim: [[spoiler:Subverted. After exploiting people with his novel, he is killed by Michael in Zombieverse sequel, but by then, realizes what he has done and tries to save Laurie at the end.]]
* BerserkButton: In the Zombieverse sequel, asking about Michael being alive greatly annoys him.
* BigBadEnsemble: In the Zombieverse sequel, he acts as the secondary antagonist, but more of a downplayed VillainyFreeVillain considering the low he stooped down to is emotionally hurting the relatives of Michael's victims by profiting off their deaths with his latest book.
* BigBadWannabe: In the Zombieverse sequel, unlike Michael however, he never was able to stoop to such lows as taking an innocent life.
* FallenHero: By the Zombieverse's sequel, he became heartless, greedy, snooty and temperamental then before. At least until his JerkassRealization.
* HateSink: Loomis in the sequel is a despicable, heartless, borderline sociopathic and greedy {{Slimeball}}. [[spoiler:His death at the hands of Michael is quite cathartic.]]
* HeWhoFightsMonsters: Loomis in the sequel let the pride of surviving his brush with death and fame of his writing to go to his head.
* JerkassRealization: In the sequel, Loomis realizes what a bastard he has become and decides to make up for it by saving Laurie from Michael.
* MyGreatestFailure: Somewhat feels his inability to help or understand Michael during his time at Smith's Grove was this at first, before being highly subverted in the sequel as he capitalizes off of Michael's notoriety.
* RedemptionEqualsDeath: [[spoiler:In the sequel, Loomis, after having a JerkassRealization, goes to save Laurie from Michael. Unfortunately, he does so unarmed.]]
* {{Slimeball}}: In the Zombieverse sequel, he degrades to a greedy and heartless writer who profits off the deaths of Michael's victims.
* SociopathicHero: In the Zombieverse sequel (though "hero" could be stretch), even though he pursued Michael in the 2007 film, he shows LackOfEmpathy towards the tragedies caused by Michael's murder spree and shamelessly tries to profit the murders through his books in the next film.
* SuddenSequelHeelSyndrome: In the second film, he became a greedy and cold-hearted {{Jerkass}} author nearly bordering on sociopathy in contrast to a point of being unrecognizable to his portrayal in the 2007 film until his JerkassRealization at the climax.
* TooDumbToLive: Loomis, what were you thinking when you choose to confront Michael in the sequel without bringing a gun this time?
* TookALevelInJerkass: In the second film, he becomes a much more arrogant, cold-hearted and greedy person over his experience with Michael.
* WhatTheHellHero: Gets a number of these in the second film for having TookALevelInJerkass.
[[/folder]]
[[folder:2018 and after continuity]]
!!Dr. Samuel Loomis
->'''Played by: Colin Mahan (Voice), Tom Jones, Jr. (Body)'''
Michael Myers' old psychiatrist.
----
* FinalSpeech: Effectively gives one via audio recording.
-->'''Loomis:''' My suggestion is termination. Death is the only solution for Michael. [[BeyondRedemption There's nothing to be gained from keeping evil alive.]] One shot of sodium thiopental would render him unconscious. [[MakeSureHesDead I'll be with him to make sure his life is extinguished, my ear on his chest to hear for myself that his vitals no longer function]] [[FireKeepsItDead and immediately incinerate the body.]] [[ItIsDehumanizing It]] [[SuddenlyShouting needs to die, it needs to die!]] [[MadnessMantra It needs to die!]]
* {{Foreshadowing}}: His last words are a repeated screaming that Michael Myers [[KillItWithFire needs to be cremated]]. [[spoiler:Which Laurie Strode does her best to fulfill.]]
* GreaterScopeParagon: He was the original BigGood in the original film, but his role has been taken over by Laurie in her senior age.
* IgnoredExpert: Loomis, who had studied Michael for fifteen years and played a key role in his recapture, recommended that Michael's life be terminated. The authorities disregarded Loomis and kept Michael institutionalized, leaving the possibility that he could escape again (which he does) and go on another rampage (which he did).
* ObliviousGuiltSlinging: When Loomis and the Haddonfield police catch up to Michael, Loomis asks Hawkins if Michael killed again. [[spoiler:Michael did attack Hawkins' partner, but it was Hawkins who accidentally killed him while shooting at Michael.]]
* TheOtherDarrin: Colin Mahan voices Dr. Loomis, since Donald Pleasance had passed away. To his credit, Mahan's voice sounds like a dead ringer for Pleasance's. Tom Jones, Jr. appears in the 1978 flashback scenes in ''Kills'', which Mahan also voices.
* PosthumousCharacter: Dr. Loomis appears in the 2018 movie as a voice on an old recording, and in a flashback sequence at the beginning of ''Kills''.
* WhyDontYouJustShootHim: Downplayed; he really wanted to kill Michael right then and there, but Hawkins stopped him.
[[/folder]]
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[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/img_0946.JPG]]
One of the main protagonists of the ''Halloween'' film series. Loomis met a six-year-old Michael Myers after he killed his older sister and became his psychiatrist. After Michael escapes to resume his killing spree, Loomis selflessly sets out to stop him.
----
[[foldercontrol]]
[[folder:Pre-2018 timelines]]
Michael's [[TheShrink psychiatrist]], Dr. Loomis is forced multiple times to track Michael down in an attempt to stop him from killing people. And he's pretty badass at doing it.
[-Played by: Creator/DonaldPleasence (''[[Film/{{Halloween 1978}} I]]'' to ''[[Film/HalloweenII1981 II]]'' and ''[[Film/Halloween4TheReturnOfMichaelMyers 4]]'' to ''[[Film/HalloweenTheCurseOfMichaelMyers The Curse]]''), Creator/TomKane (''[[Film/HalloweenH20TwentyYearsLater H20]]'') (Voice Only)-]
----
* TenMinuteRetirement: Loomis retires during the six-year TimeSkip in ''Film/HalloweenTheCurseOfMichaelMyers'', but comes out of it once he hears Jamie calling for his help over the radio.
* ActorAllusion: Loomis being a WWII veteran who had been a POW of the Luftwaffe in the ''H20'' canon comic series is possibly a nod to his actor's previous role in ''Film/TheGreatEscape'', where he had also played a British POW in a Luftwaffe POW camp (though unlike Colin Blythe, Loomis survives the film).
* ADayInTheLimelight: ''Halloween: Sam'', taking place in the ''H20'' timeline, expands on the doctor's past in a way the films never did.
* AllForNothing:
** Loomis spends the fourth film trying to stop Michael from killing people. After he hitches a ride with Reverend Sayer, the latter warns him that damnation cannot be killed like a man can. [[spoiler:Although Michael is eventually stopped thanks to Meeker, Jamie stabs her stepmother and seemingly inherits the damnation that Sayer warned Loomis about, the latter being the first person to discover her attack. Since the core reason for Loomis wanting Michael is to prevent him from hurting others, he failed to achieve that goal per Jamie following in her uncle's footsteps.]]
** The fifth film has Loomis trying to get Jamie to use her telepathic powers to help him find Michael. She eventually agrees to his plan and Michael chases after Jamie. Loomis uses her to lure Michael into a trap and he beats Michael while shouting for him to die. While this technically stops Michael's killing spree for the night, as he is taken to the police department in his weaken state, [[spoiler:Wynn bursts him out of jail and abducts Jamie, with Loomis failing to stop him permanently (as he had intended) and being unable to protect Jamie.]]
* AloneWithThePsycho: A scene in ''Halloween 5'' has Loomis confronting Michael by himself and making a plea for him to have a positive relationship with Jamie.
* AmbiguousSituation: Michael never tries to kill Loomis. At worst, he will attack him in a non-fatal way, and this only happens when he gets in the way of his going after Laurie or Jamie. Some have speculated that this is due to Michael having some respect for Loomis as the only person who was able to understand how evil he was. Others theorize Michael has come to, in his own twisted way, care about Loomis because of how long they have known each other and consistently sparing him from his killing spree is the closest thing to kindness he can show another person.
* AntiHero: Loomis is this on his worst days, such as in ''Revenge of Michael Myers'' where he was more than willing to use little Jamie Lloyd as bait to capture Michael Myers.
* ArchEnemy: No matter where Michael goes, Loomis will be there to stop him.
* AuthorityInNameOnly: As Dr. Hoffman explains, Loomis's role as Michael's psychiatrist is more "ceremonial than medical".
* AxCrazy: Dealing with Michael has caused a significant amount of SanitySlippage, and Loomis himself as shown to have fits ranting and raving, shooting wildly at Michael in attempts to kill him. At the end of ''Return of Michael Myers'', he even attempts to shoot Jamie (granted, she had stabbed her adoptive mother, but still).
* BackInTheSaddle: At the start of ''6'', Loomis has been retired for years due to a stroke and Michael being gone. All that changes when he hears Jamie calling over the radio for his aid, and he becomes one of the few trying to protect the Strodes and Jamie's baby from Michael.
* BadLiar: Loomis lies to Jamie when he affirms that they’ll be safe after pulling the alarm at her school. She sees through his claim instantly.
* BadassBookworm: Michael's arch-enemy and a professional psychologist.
* BadassLongcoat: An impressively stylish beige one.
* BaldHeadOfToughness: The series' leading badass has not a hair upon his head. He's bald and keeps going despite all the beatings and injuries he endures.
* BerserkButton: Whenever someone doubts that Michael is as dangerous as Loomis says he is, expect him to respond in a shouting tone.
* BeyondRedemption: He tried for years to help Michael overcome his violent urges. However by the main events of the first film, Loomis eventually admits that it was all in vain, and that Michael has to be stopped by any means necessary.
* BigDamnHeroes: In the original film, just as Laurie is struggling against Michael and she falls to the floor after ripping off Michael's mask, Loomis runs up the staircase of the Doyle house and sees Michael donning his mask again. Loomis shoots him away from her and then enough times for him to fall off a balcony.
* BigGood: He is the face of the force of good in the franchise, for being Michael's ArchEnemy.
* BigNo: He gives one out [[spoiler:in the ending of ''Halloween 4'' after realizing that Jamie has stabbed her stepmother]].
* BrutalHonesty: While trying to convince Jamie to use her powers to help him find Michael in ''5'', Loomis bluntly tells her that her tears won't stop Michael from killing her.
* BusCrash: Due to the death of Donald Pleasance, Dr. Loomis is stated to have died in between films in ''H20'' and the 2018 installment.
* TheCallKnowsWhereYouLive: ''Halloween: The Curse of Michael Myers'' begins with Loomis living alone when Terrence Wynn comes to visit him and request that he come back to Smith's Grove. Loomis declines and states his content with being retired. [[spoiler:Then he learns via radio that Jamie Lloyd is seeking his help to come and save her again.]]
* CareerEndingInjury: The stroke he has while beating Michael causes him to retire from Smith's Grove.
* CantStayNormal: Although retired at the start of the sixth film, Loomis is convinced that his aid is needed to defeat Michael once more.
* CavalryBetrayal: Invokes, but then subverts this when he appears to betray Jamie by offering her to Michael when he's really holding her to lure him into a trap.
* CassandraTruth: His entire career in regards to Michael is this. No one ever listens to his warnings about the danger Michael poses to society until it's too late. Though this is actually not as bad as in most cases; in both the first two movies and the fourth movie, the cops at least heed his warnings and take some action. Unfortunately, it isn't enough.
* CelibateHero: Throughout the original film series, Loomis is never shown having any interest in a love life. The comic ''Halloween: Sam'' details his romantic interest in Elizabeth Worthington, who he meets during WWII and last sees five years before Michael stabs Judith.
* CharacterNarrator: Loomis narrates the opening of the Producer's Cut of the sixth film.
* TheChosenOne: [[spoiler:In the Producer's Cut of ''6'', Wynn asserts that it has always been Loomis's destiny to join the Cult of Thorn and that he needs him.]]
* ChronicHeroSyndrome: Loomis cannot bring himself to stay out of the hunt for Michael. If he even so much as suspects Michael is in Haddonfield, he will travel to find and stop him, no matter his affliction.
* CoolOldGuy: As he got older, he didn't get any weaker. He wailed on Michael with a two-by-four... while in the middle of having a stroke!
* CombatPragmatist: Loomis knows Michael cannot be either seriously harmed or killed without weaponry and will use anything that can help accomplish this. He sets off the explosion in ''Halloween 2'' with the estimation that Michael has never been caught in fire and despite it not killing him as Loomis intended, the gambit succeeds in ending his rampage for the night.
* TheConfidant: In the fifth film, as Jamie is having psychic visions of where Michael is, Loomis tries to convince her to use them to help him find Michael and attempts to be her confidant by being more attentive to her pleas than others, but she shuts him out.
* ConspicuousGloves: In ''4'' and ''5'', Loomis wears a pair of black gloves as to hide the scarring on his hands from being exposed.
* CoveredWithScars: After trying to kill Michael in a fire in the second film, he shows up in ''4'' and ''5'' with a limp and burn scars on one cheek and his hands, which he hides with ConspicuousGloves. His scars disappear in the sixth film as a result of getting plastic surgery and skin grafts.
* CrazyPrepared: In the fifth film, he set a trap involving a heavy, metal chain net attached to a rope to drop on Michael. Then he shoots him 3-4 times with a tranquilizer gun, before it's snatched away. ''Then'' he grabs a 2x4 and beats Michael with it. It works.
* CreepyGood: In ''4'', ''5'', and ''6'', he's still the BigGood, but now he is covered in burn marks (less so in ''6''), walks with a limp and is undergoing SanitySlippage.
* CrutchCharacter: Loomis, due to knowing Michael better than anyone else, is more adept at defeating him than other characters and has to be written in a way that does not allow him to encounter Michael before the film's conclusion. This is usually accomplished by having Loomis travel around in search of him and only finally find Michael as he is close to killing either Laurie or Jamie. ''4'' subverts this twice by having Loomis and Michael meet multiple times before the movie ends and having Michael's final defeat come from Meeker and other officers.
* DemotedToExtra: In the sixth film.
* {{Determinator}}: He'd have to be to keep up a conflict with [[ImplacableMan Michael]].
* DyingMomentOfAwesome: Subverted. In ''Hallloween II'', he shot Michael in the eyes and tried to blow both himself and Michael to bits. Fortunately, Loomis lived. Unfortunately, ''so did Michael''.
* EarnYourHappyEnding: While Loomis never outright kills Michael due to the ongoing nature of the ''Halloween'' franchise not allowing its antagonist to die, Loomis is either directly or heavily involved with Michael's defeat in each film of the original series.
* EasilyForgiven: [[spoiler:Despite pointing a gun at a possessed Jamie with the clear intent of shooting her in ''4'', no one seems to have a problem with him becoming her psychiatrist prior to the events of the fifth film.]]
* ExperiencedProtagonist: By the events of the first film, Loomis has known Michael for fifteen years and is the character with the most understanding of him.
* FlawExploitation: Loomis uses Michael's obsession with killing Jamie and slow walking to lure him into a trap he set up in the Myers house.
* {{Foil}}:
** ''Film/Halloween1978'':
*** To Leigh Brackett. Both are middle-aged men who are trying to stop Michael from killing people in Haddonfield, but whereas Brackett is skeptical of Michael returning after such a long time, Loomis is confident that he is going to strike that night. Despite being the one who is a member of law enforcement and whose job it is to protect people, Brackett ends up not encountering Michael at all that night while Loomis not only saves Laurie twice but ends Michael's killing spree altogether for the time being.
*** Loomis and Laurie are juxtaposed in their dynamics with Michael. Loomis pursues Michael to Haddonfield while Michael pursues Laurie. Laurie has never met Michael and is doubtful of the existence of a "boogeyman" while Loomis has known him for years and very much believes he is the embodiment of evil. In the final act of the film, while Laurie has a drawn out encounter with Michael and is injured in the process, Loomis simply shoots him and ends the film completely unharmed.
** ''Film/Halloween4TheReturnOfMichaelMyers'':
*** Loomis and Jamie are connected by being associated with Michael, but Loomis is not related to Michael and has years of experience with him while Jamie is related to Michael and had never met him before the events of the film. Loomis is able to fight back against Michael, albeit with weaponry, while Jamie has to be protected due to her age. [[spoiler:Loomis is unquestionably on the side of good while Jamie seems to be this way as well, only for her to stab her stepmother in a first act of villainy.]]
*** To Ben Meeker. Both are older men who want to stop Michael, but Meeker wants the matter to be dealt with by the police while Loomis has no problem informing the public of Michael's return. They both leave the Meeker house before Michael starts killing, but Meeker leaves to stop disgruntled vigilantes in town from hurting someone while Loomis leaves to stand guard over the Carruthers house in the event that Michael returns. Loomis plays no role in Michael's final defeat in the film's conclusion while Meeker is at the center of it.
** ''Film/Halloween5TheRevengeOfMichaelMyers'': Loomis and Tina share an affection for Jamie and an interest in being there for her. But while Loomis takes Jamie's convulsions, and the warnings that come with them very seriously, Tina does not and writes them off on account of Jamie's age. Although both leave Jamie's side at various points in the film, Loomis leaves to investigate where Michael is for the purpose of protecting her while Tina leaves for selfish reasons such as wanting to go to a party or hang out with her friends. Michael never targets Loomis, but stalks Tina as a means of getting closer to Jamie. [[spoiler:Both also share a similar fate by the end of the film of being seemingly deceased after encountering Michael.]]
** ''Film/HalloweenTheCurseOfMichaelMyers'': To Kara Strode. Both are interested in protecting Jamie's baby Steven from Michael and are the few adults that Tommy trusts with the baby. While Loomis lives by himself, Kara resides with her son, parents, and brother. The Cult of Thorn kidnaps Kara, but voluntarily leaves Loomis instead of imprisoning him as well. In the Producer's Cut, Loomis never encounters Michael while Kara does multiple times.
* FreakOut: [[spoiler:Screams hysterically at the sight of a possessed Jamie in ''4'', and after being marked with the Thorn symbol in the Producer's Cut of the sixth film.]]
* FriendToAllChildren: He tries to protect any and all children from Michael.
** In the first film, he scares Lonnie away from going into the Myers house when his friends are daring him to go inside.
** In the fourth and fifth films, he protects Jamie from Michael by any means necessary. Though he loses a bit of this when he tries to use her as bait.
* {{Foreshadowing}}: Loomis is with Meeker when he learns of a coffin being removed from the cemetery and Loomis relays this to Jamie, asking her what she thinks Michael is going to use it for. [[spoiler:The coffin is seen in the final act of the film in the Myers house as Jamie tries to evade Michael and lays in it as she asks to see his face.]]
* GoodIsNotSoft: Loomis is a major example of this trope, given his willingness to kill Michael and threaten those that get in his way of putting him down.
* GreaterScopeParagon: He is this in the films made after his actor Donald Pleasance's death, as he was the BigGood of the films and references to him were made in his absence following the character's BusCrash.
* GunNut: His WeaponOfChoice for the first two films is [[RevolversAreJustBetter a Smith and Wesson Model 15]], but switches over to a Smith and Wesson 639 pistol with pearl grips for his next two appearances.
* HandicappedBadass: In the Thorn trilogy, he has a limp thanks to injuries he took in the explosion in the second film.
* HeroWithBadPublicity: Implied to be disliked by Haddonfield citizens and cops in ''Halloween 4'' due to his association with Michael's killing spree in the first two films, despite Loomis doing his best to stop him.
* HeroicSacrifice: Tries to pull this off in ''Halloween 2'' to kill himself and Michael, but it fails and they both survive.
* HeroicSecondWind: Falls to the ground and appears dead after being stabbed by Michael in ''Halloween 2'', but recovers to get up and help Laurie.
* HeWhoFightsMonsters: Dangerously comes close in becoming this as he starts to use unethical tactics to fight Michael in the later films.
* HistoryRepeats:
** Seems to be what goes through Loomis's mind at the end of ''Halloween 4''. [[spoiler:He knows that Michael first killed as a child on Halloween night and Loomis sees the sight of the bloodstained Jamie after she has stabbed her stepmother twenty-five years later, reacting by screaming in horror after believing Michael was finally gone.]]
** In the events leading up to the first film, Loomis was assigned to the mute Michael after the latter stabbed his sister and by his own admission was the only one who recognized what he truly was. In ''Halloween 5'', Loomis is assigned to the mute Jamie [[spoiler:after she stabbed her stepmother]] and has other staff unable to recognize her true disability, such as when a doctor incorrectly concludes that Jamie is dying during one of her convulsions.
* HoldingHands: A hallmark of Loomis helping someone is that he holds their hand while they are together.
** In the second film, after Michael gets back up, Laurie grabs onto Loomis in fear and leads him away by taking his hand.
** In the fourth film, when Loomis finds Jamie alone and requests she lead them to the schoolhouse for safety from Michael, Loomis holds her hand the entire time they walk there and while they go inside.
* HopeBringer: After getting Steven, Tommy is so relieved to see Loomis that he thanks God.
* HumbleHero: In the sixth film, Loomis makes a self-deprecating joke about his previously-scarred appearance frightening children.
* HurtingHero: By the time of ''Halloween 4'', Loomis has spent ten years watching over the patient he unsuccessfully tried to stop from killing people and has had to look at his scars from the night that haunts him every day. But despite his physical pain, and his past failure, he still does everything he can to save Jamie from Michael.
* IgnoredExpert: Nobody takes his warnings about Michael seriously until it's too late. To be fair, asserting that a patient is or has "pure evil" isn't likely to convince too many people.
* ImprovisedWeapon: Usually when his gun is unavailable.
** Out of ammo and wounded, Loomis uses the gas valves in the hospital and a lighter to put Michael's murder spree to an end for the night in ''Halloween 2''.
** When Michael grabs his tranquilizer gun, and shows that it hasn't fully-weakened him, Loomis rips a plank of wood off the walls of the Myers house and begins beating Michael with it.
* InSeriesNickname: The few times when his first name is used, its shortened to "Sam".
* IntergenerationalFriendship: In the sixth film, Loomis refers to the young adult Tommy as an "old friend" when Wynn asks him who he is.
* ItIsDehumanizing: As per his not-unjustified belief that Michael is [[MadeOfEvil evil incarnate]], he calls Michael "it" on more than one occasion.
* JerkWithAHeartOfGold: He has his moments (loudly and more rudely telling Nurse Marion to stay quiet when she was not so loud in voicing a concern in the second movie - him causing the accidental death of Ben Tramer, though out of desperation - or him going off the deep end and cornering a traumatized Jamie Lloyd in ''Revenge''), but he's definitely on the side of good.
* JumpScare:
** On the receiving end of one in the original film when Brackett comes behind him and grabs him.
** Gives one to Jamie when he comes up from behind her after she has run away from Michael in the fourth film. He gives her another one in ''5'' when she and Billy are fleeing Michael after his unsuccessful attempts to kill them with his car.
* JumpedAtTheCall: The second Loomis finds out Michael is free and out on a killing spree, Haddonfield is where he will be!
* JustInTime: Comes to Laurie's aid just as she is being attacked by Michael in the original.
* TheLeader: Loomis is able to coerce multiple sheriffs and policemen to follow along with his plans. Brackett looks for Michael with him during the first two films, Meeker abides by his plan of finding Jamie in the fourth film and a plot involving using Jamie as bait in the fifth film.
* LegendaryInTheSequel: He goes from having to introduce himself to the Haddonfield sheriff in the original to being instantly recognized by the new sheriff ten years later in the fourth film.
* LightIsGood: In contrast to Michael's dark coveralls, he wears a biege trenchcoat.
* LimitedWardrobe: In the original film series, Loomis is always seen wearing a variation of a biege trenchcoat and a suit until his retirement.
* LockedOutOfTheLoop: Especially when it comes to important information about Michael.
** Because the records were sealed until after the events of the first film, Loomis never knew that Michael had a younger, still-living sister until Marion Chambers brought him up to speed on the governor unsealing them.
** Loomis confronts Hoffman for not notifying him that Michael was being transferred.
* MadeOfIron: Survived a large explosion, has been tossed around, slashed and stabbed by Michael, and even beat Michael Myers down while in his 70's and having a stroke (which he survived).
* {{Misblamed}}: In-universe, Loomis is blamed by Sheriff Brackett for Michael's rampage, despite the fact that Loomis did all he could to make sure Michael never saw the light of day again.
** On top of that, he's a lowly psychiatrist. If Brackett wants to blame anyone it should be Loomis' bosses, because they refused to listen to how dangerous Michael was.
* MyGreatestFailure: In the Producer's Cut of the sixth film, Loomis admits trying to understand Michael was this for him.
-->'''Loomis:''' For fifteen years, I've been obsessed to find out what was going on inside of him. It's been my life work, and my ultimate failure.
* NeverGotToSayGoodbye: To [[spoiler:Jamie, and presumably Laurie as well.]]
** [[spoiler:Jamie tries contacting Loomis through a radio station while she is fleeing Michael. Loomis hears her but cannot respond, and never gets to speak to her directly due to her being killed by Michael in the theatrical cut and shot in the head by Wynn in the Producer's Cut.]]
** [[spoiler:Laurie is killed offscreen in a car accident before the events of Halloween 4, meaning that Loomis never got to say goodbye to the young woman he protected from Michael 10 years ago before her actual death.]]
* NoGoodDeedGoesUnpunished: Loomis, through no fault of his own, encounters a homicidal boy who he tries for years to reach. After Michael breaks out, Loomis goes out of his way to stop him from killing more people and his reward is being written off as hysterical when he warns people, being wounded by Michael almost every time they see each other, and sometimes even being blamed for what Michael does.
* NonProtagonistResolver: Although Laurie is the one the audience spends the most time with in ''Halloween'', Loomis resolves the conflict of the film by shooting Michael as he tries to finish her off.
* NotAfraidToDie: Shows this consistently throughout the series.
** Loomis, without backup from Brackett, charges into the Doyle house and shoots Michael as he sees the latter attacking Laurie. He then confronts Michael in another room, alone, before shooting him.
** When Loomis lights the fire at the hospital that blows himself and Michael up in the second film, he does so without any sign of second-thought or hesitation, just calmly telling Michael that it's time.
** In the fourth film, when he discovers Michael at the filling station, he comes over to him and makes a plead for him to leave the people of his hometown alone, even offering his own life.
** Loomis dismisses the orders of officers so that he can confront Michael alone. When they meet, Loomis comes close to Michael, who is holding a knife, and while he himself is unarmed with any immediate way to defend himself.
* NotQuiteDead: Along with Michael, Loomis is severely burned and nearly killed in the explosion he set at the end of the second film.
* OffscreenTeleportation: Being thrown through a glass door at Jamie's school is where Loomis is last seen in ''4'' before Michael's defeat. The opening of ''5'' reveals that he was holding Jamie while Michael was being shot by Meeker, despite seemingly having no way of getting there as his car had been destroyed earlier in the movie.
* OhCrap:
** Loomis is shocked when Michael kills the Marshall in ''Halloween II'' as this is seemingly the first time he's ever actually seen Michael kill someone.
** [[spoiler:He screams horrifically when discovering that Jamie has stabbed her stepmother in the final scene of ''Halloween 4''.]]
* OlderHeroVsYoungerVillain: Loomis is old enough to Michael's father.
* OncePerEpisode: Loomis will often encounter Michael and after trying to speak to or attack him, be assaulted. This includes Loomis being stabbed with a scalpel after a failed attempt to shoot Michael in ''Halloween II'', being thrown through a glass door by Michael in ''Halloween 4'', and being slashed across the chest and thrown to the ground in ''Halloween 5''.
* OnlyFriend: He seems to be this to Terrence Wynn, the only character in the original timeline to call him by his first name, as Wynn is not shown spending time with others in his free time. [[spoiler:Even after Wynn is revealed as the Man in Black, and Loomis displays a willingness to both denounce him as a monster and shoot him, Wynn never speaks ill of him and even wants him to join his cult.]]
* OnlyOneName: Most films omit his first name. The only exceptions in the original series are when Loomis introduces himself to Brackett in the first film and when Terrence Wynn calls Loomis "Sam" in the sixth film.
* PapaWolf: Though he never has children of his own he was willing to protect 17 year old Laurie at the cost of his own life and young Jamie afterwards.
* PassingTheTorch: ''Halloween 6'' writer Daniel Farrands stated his intent for Loomis to pass the torch of hunting Michael to Tommy in the film.
* PlatonicLifePartners: With Marion Chambers in the ''H20'' timeline, to such an extent that almost every scene that Marion appears in (within the first two films) is with Loomis. It is established in ''H20'' that Loomis was living with her at the time of his passing.
* ProperlyParanoid: Others viewed a young Michael as a disturbed boy who could not get too far in a minimum-security prison. Loomis viewed him as a monster carrying pure evil, just waiting to strike. Guess who was right.
* TheProtagonist: Of the original timeline of films, but one of two main contenders for this of the ''Halloween'' franchise as a whole, the other being Laurie Strode. Even when he does not personally appear, Loomis is still mentioned or given some homage that exceeds most other characters.
* PostVictoryCollapse: After beating Michael unconscious in the climax of ''5'', Loomis succumbs to his stroke and falls on top of him.
* RefusedByTheCall: Meeker initially refuses to believe Loomis when he warns him of Michael's return. It's only after Loomis notes the murders that have recently taken place that Meeker changes his mind.
* RetiredBadass: According to the original canon comic series (or in the ''H20'' canon), Loomis was a war veteran.
* RudeHeroNiceSidekick: This is his dynamic with Marion Chambers in the first two films. Marion is respectful of patients and law enforcement while Loomis openly dehumanizes Michael and will go against orders of higher figures of authority if he sees fit.
* SanitySlippage: Starts pretty quickly when he raves about how "the evil has gone" at the beginning of the first movie and eventually slips right down into full-blown bat shit fanatical madness' peak in ''The Revenge of Michael Myers'', where he uses Jamie as bait before beating Michael unconscious with a 2x4, screaming for him to die.
* ScarsAreForever: Subverted. Unlike ''4'' and ''5'', Loomis is not depicted with scars in the sixth film, the Producer's Cut explaining that he had surgery to get rid of them.
* ScrewTheRulesImDoingWhatsRight: In the second film, Loomis is ordered out of Haddonfield but chooses to ignore this to come to Laurie's rescue.
* SecretKeeper: Loomis and Marion are the only ones to know Laurie is still alive after she fakes her death in the ''H20'' timeline.
* SignificantWardrobeShift: Unlike the past four films, Loomis does not wear his trench coat while hunting Michael in ''6''. This is to illustrate that he has retired and moved on in the years since Michael and Jamie were last seen.
* SmartPeopleWearGlasses: He is seen wearing glasses at the start of the sixth film.
* TheStrategist: Loomis is often the only one who can come up with effective ways to stop Michael and the Haddonfield police sheriffs and officers tend to heed his plans.
* SupportingLeader: He spends most of the original hunting Michael down and gets top billing, but he isn't the lead character.
* SympathyForTheDevil: In the Producer's Cut of the sixth film, Loomis approaches Michael as he lays on the ground and with a mournful tone tells him that it's all over before he pulls off his mask and [[spoiler:realizes it's Wynn.]]
* TakeMeInstead: In the fourth movie, after encountering Michael at the diner, Loomis is perfectly willing to try this. Unsurprisingly, Michael doesn't take this offer.
-->"Don't go to Haddonfield. If you want another victim, take me. But leave those people in peace. Please, Michael? [''silence''] God damn you. [''starts shooting'']"
* TalkingToTheDead: [[spoiler:In the Producer's Cut of the sixth film, Loomis speaks to Jamie's corpse and admits he let her down.]]
* TalkingToThemself: In his first on-screen appearance in the sixth film, Loomis responds to a person over the radio inquiring if he is deceased.
* TaughtByExperience: After eight years of trying to reach him, Loomis realized that Michael was pure evil, and the main reason Loomis is such a threat to Michael is because of how long he's been around him.
* TheThingThatWouldNotLeave: He is viewed this way by Hoffman, who tells those transporting Michael's body that he hopes Loomis will either transfer, retire, or die after Michael is gone.
* ThisCannotBe: His initial reaction to seeing that Michael has disappeared after being shot off the balcony in the original film.
* ToBeLawfulOrGood: Loomis will choose to disobey the law if he knows listening to officers will impede his plots to stop Michael. In the second film, he points a gun to an officer's face as he drives him out of Haddonfield and fires a warning shot to get him to take him to Haddonfield Memorial Hospital.
* TogetherInDeath: [[spoiler:The ''Halloween: Sam'' comic sees Loomis die of a heart attack next to the corpse of his recently-deceased old friend Elizabeth Worthington.]]
* TookALevelInKindness: Is more calm in the sixth film than the prior installment.
* ToughLove: His treatment of Jamie in ''5''. He shouts at Jamie when she does not comply with his orders to reveal where Michael is by using her psychic link with him. Though this is harsh, he does it because he believes she is the only one who can truly help find where Michael is and he wants to find him to prevent Michael from killing others, including her. He also does take her feelings into account, as he specifically telephones Rachel after she senses Michael is around her and has officers to follow Tina when she refuses to stay at the clinic with Jamie.
* TragicHero: Loomis was just a normal psychiatrist who happened to encounter a child who murdered his sister for no reason besides him being pure evil and tries to stop him from continuing his killing sprees as an adult. For his troubles, Loomis has burn scars, a bad reputation among law enforcement, and walks with a limp.
* TragicKeepsake: The scars on his body remind him of the hospital explosion at the end of the second film.
* TwoFaced: Loomis has half of his face scarred in both ''4'' and ''5'' and it is implied that most of his body has scarring from the hospital fire.
* UncertainDoom: In ''The Curse of Michael Myers'', both cuts give uncertain fates for him as he reenters the abandoned Smith's Grove to finish Michael. The Theatrical Cut ends with his screaming with the implication Michael finally killed him, while the Producer's Cut [[spoiler: has him find Dr. Wynn on the floor in Michael's place, who passes the Curse of Thorn onto him as Michael escapes, much to Loomis' horror.]]
* UnintentionalBackupPlan: In the second film, Loomis tries to kill Michael by shooting him in the head. Out of bullets and subsequently stabbed, he ignites an explosion that succeeds in ending Michael's killing spree for the time being.
* VictoryByEndurance: [[spoiler: Loomis's win over Michael in ''5'' has him beating the latter until he loses consciousness, and he himself collapses a short time later.]]
* VillainKiller: Had ''Halloween II'' been the ending of the Michael Myers plot, as originally intended, Loomis would have been successful in killing Michael with the hospital explosion, albeit at the cost of his own life.
* WeakButSkilled: Because of his age and Michael's superhuman strength, Loomis can never defeat him in a fair fight, but uses his intelligence, strategy, and weaponry to combat his arch-nemesis. His victories are a triumph of brains over brawn.
* WeaponOfChoice: [[spoiler:The ending of ''Halloween 4'' sees Jamie use a pair of scissors when she attacks her stepmother.]]
* WellIntentionedExtremist: Although some of the things he does earn him repudiation, it's all meant to stop Michael from killing innocent people.
* WildCard: Loomis is on the side of good, but expect him to do just about anything to stop Michael.
** His holding an officer and Marion at gunpoint in the second film. He only does this after finding out Laurie and Michael are siblings and to get to the former before Michael can kill her.
** After Meeker orders Jamie be taken to a police station for her own safety, and officer Charlie Bloch agrees to comply with this order, Loomis locks Bloch and Jamie in the room while he confronts Michael alone.
* WhatTheHellHero: Loomis seems to get this at least once a movie - usually because of what Michael has done. Not fair in those cases, though, cause Loomis did everything possible to keep Michael locked up. However, Nurse Patsey rightfully calls him out when he is downright scaring Jamie in Halloween 5.
* WhyWontYouDie: Shouts for Michael to die as he beats him with wood in the fifth film.
* TheWorfEffect: [[spoiler:In the sixth film, Loomis is easily rendered unconscious by a hit to the back from Wynn's men.]]
* WouldHitAGirl: Implied by Loomis when he has Marion at gunpoint in ''Halloween 2''. [[spoiler:He has no qualms about Jamie's gender when he raises his gun to her after seeing that she has stabbed her stepmother.]]
* WouldHurtAChild: [[spoiler:During the ending of ''Halloween 4'', a terrified Loomis raises his gun to shoot Jamie after he realizes she has stabbed her stepmother. If Meeker had not wrestled the gun out of his hand, it is highly likely he would have shot Jamie.]]
* YankTheDogsChain: ''Halloween: The Curse of Michael Myers'' gives Loomis much closure after what he's been through in previous installments. Michael has been gone for the longest period since the series started, allowing Loomis to retire. After he has "buried the ghosts", his physical scars are gone, and he has a new desire to write a manuscript, [[spoiler:he gets involved in trying to stop Michael's latest spree and is possibly killed by him in the Theatrical Cut.]]
* YouAreWhatYouHate: Dr. Hoffman invokes this in Loomis's first scene in ''4'' when the latter warns him about Michael.
-->'''Dr. Hoffman:''' I've said this before. I think you're the one who needs mental help.
* YouCantGoHomeAgain: Tells a crying Jamie she cannot return to her house since Michael would come there for her.
* YouShallNotPass: Declares this to Bloch when the latter and Jamie try to leave the Myers house so he can insure Michael comes.
[[/folder]]
[[folder:Remake Duology]]
!!Doctor Samuel Loomis
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/samloomis_halloween2007.jpg]]
[-Played By: Creator/MalcolmMcDowell-]
A noted psychologist who treated Michael during his incarceration at Smith's Grove Sanitarium.
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* AdaptationalJerkass: In the remake, he at least starts off a relatively decent man, however, it's shown that he profits off of writing about Michael's murders; something the original had virtually no interest in. By the second installment, he's devolved into a cold-hearted and greedy writer, can qualify as the sequel's secondary antagonist, [[spoiler:until the end]].
* AdaptationalWimp: In the Zombieverse sequel, [[spoiler:he chooses to confront Michael to save Laurie, but unlike in the last film and the original sequels, he does so unarmed, [[TooDumbToLive it goes well as one would expect]]]].
* AssholeVictim: [[spoiler:Subverted. After exploiting people with his novel, he is killed by Michael in Zombieverse sequel, but by then, realizes what he has done and tries to save Laurie at the end.]]
* BerserkButton: In the Zombieverse sequel, asking about Michael being alive greatly annoys him.
* BigBadEnsemble: In the Zombieverse sequel, he acts as the secondary antagonist, but more of a downplayed VillainyFreeVillain considering the low he stooped down to is emotionally hurting the relatives of Michael's victims by profiting off their deaths with his latest book.
* BigBadWannabe: In the Zombieverse sequel, unlike Michael however, he never was able to stoop to such lows as taking an innocent life.
* FallenHero: By the Zombieverse's sequel, he became heartless, greedy, snooty and temperamental then before. At least until his JerkassRealization.
* HateSink: Loomis in the sequel is a despicable, heartless, borderline sociopathic and greedy {{Slimeball}}. [[spoiler:His death at the hands of Michael is quite cathartic.]]
* HeWhoFightsMonsters: Loomis in the sequel let the pride of surviving his brush with death and fame of his writing to go to his head.
* JerkassRealization: In the sequel, Loomis realizes what a bastard he has become and decides to make up for it by saving Laurie from Michael.
* MyGreatestFailure: Somewhat feels his inability to help or understand Michael during his time at Smith's Grove was this at first, before being highly subverted in the sequel as he capitalizes off of Michael's notoriety.
* RedemptionEqualsDeath: [[spoiler:In the sequel, Loomis, after having a JerkassRealization, goes to save Laurie from Michael. Unfortunately, he does so unarmed.]]
* {{Slimeball}}: In the Zombieverse sequel, he degrades to a greedy and heartless writer who profits off the deaths of Michael's victims.
* SociopathicHero: In the Zombieverse sequel (though "hero" could be stretch), even though he pursued Michael in the 2007 film, he shows LackOfEmpathy towards the tragedies caused by Michael's murder spree and shamelessly tries to profit the murders through his books in the next film.
* SuddenSequelHeelSyndrome: In the second film, he became a greedy and cold-hearted {{Jerkass}} author nearly bordering on sociopathy in contrast to a point of being unrecognizable to his portrayal in the 2007 film until his JerkassRealization at the climax.
* TooDumbToLive: Loomis, what were you thinking when you choose to confront Michael in the sequel without bringing a gun this time?
* TookALevelInJerkass: In the second film, he becomes a much more arrogant, cold-hearted and greedy person over his experience with Michael.
* WhatTheHellHero: Gets a number of these in the second film for having TookALevelInJerkass.
[[/folder]]
[[folder:2018 and after continuity]]
!!Dr. Samuel Loomis
->'''Played by: Colin Mahan (Voice), Tom Jones, Jr. (Body)'''
Michael Myers' old psychiatrist.
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* FinalSpeech: Effectively gives one via audio recording.
-->'''Loomis:''' My suggestion is termination. Death is the only solution for Michael. [[BeyondRedemption There's nothing to be gained from keeping evil alive.]] One shot of sodium thiopental would render him unconscious. [[MakeSureHesDead I'll be with him to make sure his life is extinguished, my ear on his chest to hear for myself that his vitals no longer function]] [[FireKeepsItDead and immediately incinerate the body.]] [[ItIsDehumanizing It]] [[SuddenlyShouting needs to die, it needs to die!]] [[MadnessMantra It needs to die!]]
* {{Foreshadowing}}: His last words are a repeated screaming that Michael Myers [[KillItWithFire needs to be cremated]]. [[spoiler:Which Laurie Strode does her best to fulfill.]]
* GreaterScopeParagon: He was the original BigGood in the original film, but his role has been taken over by Laurie in her senior age.
* IgnoredExpert: Loomis, who had studied Michael for fifteen years and played a key role in his recapture, recommended that Michael's life be terminated. The authorities disregarded Loomis and kept Michael institutionalized, leaving the possibility that he could escape again (which he does) and go on another rampage (which he did).
* ObliviousGuiltSlinging: When Loomis and the Haddonfield police catch up to Michael, Loomis asks Hawkins if Michael killed again. [[spoiler:Michael did attack Hawkins' partner, but it was Hawkins who accidentally killed him while shooting at Michael.]]
* TheOtherDarrin: Colin Mahan voices Dr. Loomis, since Donald Pleasance had passed away. To his credit, Mahan's voice sounds like a dead ringer for Pleasance's. Tom Jones, Jr. appears in the 1978 flashback scenes in ''Kills'', which Mahan also voices.
* PosthumousCharacter: Dr. Loomis appears in the 2018 movie as a voice on an old recording, and in a flashback sequence at the beginning of ''Kills''.
* WhyDontYouJustShootHim: Downplayed; he really wanted to kill Michael right then and there, but Hawkins stopped him.
[[/folder]]
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