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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidMiguelDiaz Miguel Diaz]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidSamanthaLaRusso Samantha LaRusso]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | '''Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidMiguelDiaz Miguel Diaz]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidSamanthaLaRusso Samantha LaRusso]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | '''Demetri Alexopoulos'''\\Alexopoulos''' | [[Characters/TheKarateKidKylerPark Kyler Park]]\\
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* GoodIsNotNice: Note how most of the tropes here pertain to his negative qualities. Demetri never seeks any self improvement and encourages Eli and Miguel to do the same. He has no problem bringing down other people he deems lower than him no matter how bad an idea it.
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* GoodIsNotNice: At first. Note how most of the tropes here pertain to his negative qualities. Demetri never seeks any self improvement and encourages Eli and Miguel to do the same. He has no problem bringing down other people he deems lower than him no matter how bad an idea it. Later, he gets to show off more of his compassionate side.
Changed line(s) 99 (click to see context) from:
-->'''Demetri:'''I say a lot of things which tends to be a polarizing attribute mine.
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-->'''Demetri:'''I say a lot of things things, which tends to be a polarizing attribute of mine.
Changed line(s) 101 (click to see context) from:
** He becomes this to Yasmine in Season 3, as she takes pity on him when she sees him being bullied by Kyler and proves that she's [[TookALevelInKindness Taken a Level in Kindness]] by fixing the embrassing drawing that Kyler put on his cast.
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** He becomes this to Yasmine in Season 3, as she takes pity on him when she sees him being bullied by Kyler and proves that she's [[TookALevelInKindness Taken a Level in Kindness]] by fixing the embrassing embarrassing drawing that Kyler put on his cast.
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** In season 4, he makes it to the top four in the males division of the All Valley Tournament. The other 3 are Miguel, Eli, and Robby, the latter of whom delivers his defeat.
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** In season 4, he makes it to the top four in the males division of the All Valley Tournament. The other 3 are Miguel, Eli, and Robby, the latter of whom delivers his defeat.defeat (though he does make Robby work for it a bit).
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* FatalFlaw: Self-confidence, or moreso, the lack of it. He spends the better part of the first two seasons constantly complaining about the things he can't do, and generally tries to drag down his friends to his level. Once he takes out Hawk in the Season 2 finale, he gains some confidence and starts quickly excelling more at Karate and catching Yasmine's eye. By Season 4 he's at his most confident, but he still doesn't think too highly of himself even calling himself a Side Character compared to Miguel or Eli being TheAce. Even so, he has a highly impressive performance in the Skills Competition and makes it to the semifinals of the All-Valley. Demetris is highly competent when he puts his mind through something, showing he can be an effective leader, an excellent fighter and a great catch for a girl but the only thing that holds him back is his continued belief in being below others. The show subtly implies that if Demetri were to ever get over these last mental blocks that he'd be one of the best fighters in the entire cast with his reach and predictive abilities being stand out attributes of his.
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* FatalFlaw: FatalFlaw:
** Self-confidence, or moreso, the lack of it. He spends the better part of the first two seasons constantly complaining about the things he can't do, and generally tries to drag down his friends to his level. Once he takes out Hawk in the Season 2 finale, he gains some confidence and starts quickly excelling more at Karate and catching Yasmine's eye. By Season 4 he's at his most confident, but he still doesn't think too highly of himself even calling himself a Side Character compared to Miguel or Eli being TheAce. Even so, he has a highly impressive performance in the Skills Competition and makes it to the semifinals of the All-Valley. Demetris is highly competent when he puts his mind through something, showing he can be an effective leader, an excellent fighter and a great catch for a girl but the only thing that holds him back is his continued belief in being below others. The show subtly implies that if Demetri were to ever get over these last mental blocks that he'd be one of the best fighters in the entire cast with his reach and predictive abilities being stand out attributes ofhis.his.
** To a lesser extent, being TooCleverByHalf. Demetri takes a lot of pride in his intelligence and, as such, often tries to solve his problems through a clever solution rather than just accepting he needs to fight it head-on. Best shown during Chozen's egg exercise in Season 5. Demetri decides to protect his egg by designing an elaborate covering for it and displays the egg while assuming it will be safe from harm. He winds up being the first student eliminated when Chozen pierces the covering with a knife.
** Self-confidence, or moreso, the lack of it. He spends the better part of the first two seasons constantly complaining about the things he can't do, and generally tries to drag down his friends to his level. Once he takes out Hawk in the Season 2 finale, he gains some confidence and starts quickly excelling more at Karate and catching Yasmine's eye. By Season 4 he's at his most confident, but he still doesn't think too highly of himself even calling himself a Side Character compared to Miguel or Eli being TheAce. Even so, he has a highly impressive performance in the Skills Competition and makes it to the semifinals of the All-Valley. Demetris is highly competent when he puts his mind through something, showing he can be an effective leader, an excellent fighter and a great catch for a girl but the only thing that holds him back is his continued belief in being below others. The show subtly implies that if Demetri were to ever get over these last mental blocks that he'd be one of the best fighters in the entire cast with his reach and predictive abilities being stand out attributes of
** To a lesser extent, being TooCleverByHalf. Demetri takes a lot of pride in his intelligence and, as such, often tries to solve his problems through a clever solution rather than just accepting he needs to fight it head-on. Best shown during Chozen's egg exercise in Season 5. Demetri decides to protect his egg by designing an elaborate covering for it and displays the egg while assuming it will be safe from harm. He winds up being the first student eliminated when Chozen pierces the covering with a knife.
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* BigBrotherInstinct: While everyone else is defending themselves at in the Season 3 brawl at Sam’s house, Demetri pulling double duty also protecting Nathaniel and Bert from the much larger Cobra Kai assailants. He does pretty well at first.
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* BigBrotherInstinct: BigBrotherInstinct:
** While everyone else is defending themselves at in the Season 3 brawl at Sam’s house, Demetri pulling double duty also protecting Nathaniel and Bert from the much larger Cobra Kai assailants. He does pretty well at first.
** He also [[GoThroughMe protects Anthony]] alongside Miyagi-Fang when Anthony is uploading a video exposing Silver's bribery to the Cobra Kai YouTube channel in the Season 5 finale.
** While everyone else is defending themselves at in the Season 3 brawl at Sam’s house, Demetri pulling double duty also protecting Nathaniel and Bert from the much larger Cobra Kai assailants. He does pretty well at first.
** He also [[GoThroughMe protects Anthony]] alongside Miyagi-Fang when Anthony is uploading a video exposing Silver's bribery to the Cobra Kai YouTube channel in the Season 5 finale.
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* OutOfFocus: It really says something when he's demoted to "guest starring," especially when you compare his role to the other next-generation fighters with main star billing (including the recently-promoted Kenny). He doesn't even make an appearance in the Sekai-Taikai arc!
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!!!'''Played by:''' Gianni [=DeCenzo=]
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!!!'''Played by:''' Gianni [=DeCenzo=]Creator/GianniDeCenzo
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidMiguelDiaz Miguel Diaz]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | '''Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidMiguelDiaz Miguel Diaz]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidSamanthaLaRusso Samantha LaRusso]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | '''Demetri Alexopoulos'''\\
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* TookALevelInBadass: Learning karate has made him this obviously but he's still considered a newbie at the end of Season 2 since he stil greatly focused on defense.
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* TookALevelInBadass: Learning karate has made him this obviously this, obviously, but he's still considered a newbie at the end of Season 2 since he stil still greatly focused on defense.
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** In season 4 he makes it to the top four in the males competition of the All Valley Tournament. The other 3 Miguel, Eli, and Robby the latter of whom delivers his defeat.
* TookALevelInKindness: Probably the only person in history that falls under this trope by way of becoming more outwardly aggressive. In the previous 2 Seasons, as seen in the tropes above, Demetri is to put it quite bluntly...a negative, passive-aggressive asshole that hates the fact that Hawk changed his persona away from being his whipping boy (albeit...becoming a gigantic {{Jerkass}} in the process) and has no problem being a massive coward when it suits him. Come Season 3 though, off the heels of beating Hawk in a skirmish he's FAR more confident in himself. While it does make him a little grating still, this actually serves to make him far easier to be around as he's more comfortable in his skin and more accepting of how everyone else functions. Then once he's humbled a bit by [[spoiler:Hawk breaking his arm]] he comes to a good middle ground. He's the one helping to lead the charge at the end of the season to [[spoiler:merge the two dojos]] and he doesn't try to turn it into an AllTakeAndNoGive situation like he's accostomed to. In fact it's his swagger that allows it to really work. That's right friends, somewhere along the way Demetri actually became cool.
* TookALevelInKindness: Probably the only person in history that falls under this trope by way of becoming more outwardly aggressive. In the previous 2 Seasons, as seen in the tropes above, Demetri is to put it quite bluntly...a negative, passive-aggressive asshole that hates the fact that Hawk changed his persona away from being his whipping boy (albeit...becoming a gigantic {{Jerkass}} in the process) and has no problem being a massive coward when it suits him. Come Season 3 though, off the heels of beating Hawk in a skirmish he's FAR more confident in himself. While it does make him a little grating still, this actually serves to make him far easier to be around as he's more comfortable in his skin and more accepting of how everyone else functions. Then once he's humbled a bit by [[spoiler:Hawk breaking his arm]] he comes to a good middle ground. He's the one helping to lead the charge at the end of the season to [[spoiler:merge the two dojos]] and he doesn't try to turn it into an AllTakeAndNoGive situation like he's accostomed to. In fact it's his swagger that allows it to really work. That's right friends, somewhere along the way Demetri actually became cool.
to:
** In season 4 4, he makes it to the top four in the males competition division of the All Valley Tournament. The other 3 are Miguel, Eli, and Robby Robby, the latter of whom delivers his defeat.
* TookALevelInKindness: Probably the only person in history that falls under this trope by way of becoming more outwardly aggressive. In theprevious 2 Seasons, first two seasons, as seen in the tropes above, Demetri is is, to put it quite bluntly...bluntly... a negative, passive-aggressive asshole that who hates the fact that Hawk changed his persona away from being his whipping boy (albeit...becoming a gigantic {{Jerkass}} in the process) and has no problem being a massive coward when it suits him. Come Season 3 though, off the heels of beating Hawk in a skirmish skirmish, he's FAR more confident in himself. While it does make him a little grating still, this actually serves to make him far easier to be around as he's more comfortable in his skin and more accepting of how everyone else functions. Then Then, once he's humbled a bit by [[spoiler:Hawk breaking his arm]] arm]], he comes to a good middle ground. He's the one helping to lead the charge at the end of the season to [[spoiler:merge the two dojos]] and he doesn't try to turn it into an AllTakeAndNoGive situation like he's accostomed accustomed to. In fact fact, it's his swagger that allows it to really work. That's right friends, right, friends -- somewhere along the way way, Demetri actually became cool.
* TookALevelInKindness: Probably the only person in history that falls under this trope by way of becoming more outwardly aggressive. In the
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->'''Played by:''' Gianni [=DeCenzo=]
->'''Appearances:''' ''Series/CobraKai''
->'''Appearances:''' ''Series/CobraKai''
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* AcademicAthlete: Seeing how he has shown himself to be a very smart kid who takes karate.
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* DemotedToExtra: While still a notable presence in Miyagi-Do, Demitri's role in Season 5 is smaller than it was compared to the previous three seasons, which is evident as he's demoted to series recurring here.
* DitzyGenius: Demetri may be the smartest teenager in the show but he's also the most socially oblivious and quite often he doesn't know when to shut up.
* DitzyGenius: Demetri may be the smartest teenager in the show but he's also the most socially oblivious and quite often he doesn't know when to shut up.
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* DemotedToExtra: While still a notable presence prevalent in Miyagi-Do, Demitri's Demetri's role in Season 5 is smaller than it was reduced compared to the previous three seasons, which is evident as he's demoted to series recurring here.
* DitzyGenius: Demetri may be the smartest teenager in theshow show, but he's also the most socially oblivious and quite often he doesn't know when to shut up.
* DitzyGenius: Demetri may be the smartest teenager in the
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* PopCulturedBadass: A self-admitted nerd who is also a skilled karateka.
%%* ProudToBeANerd
%%* ProudToBeANerd
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* PopCulturedBadass: A self-admitted nerd that frequently makes references to popular sci-fi and fantasy franchises who is also a skilled karateka.
%%* ProudToBeANerd* ProudToBeANerd: In contrast to Eli who rejects all of his old "nerdy" interests during Seasons 2 and 3, Demetri is open about his interest in comic books, computers, science, and other similar subjects even after he takes up karate.
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* TheHeart: Yes believe it or not, the MouthyKid who dismisses others as an act of self-defense becoming this for the kids. It’s his speech that gets the kids from Eagle Fang to cooperate with Miyagi-Do when Miguel and Sam’s attempts fail and it’s seeing him in distress that’s the final catalyst in turning Hawk to their side. In Season 4, he convinces Hawk to return to Miyagi-Do by giving him a pep-talk and reminding him of how important their friendship is.
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* TheHeart: Yes believe it or not, the MouthyKid who dismisses others as an act of self-defense becoming this for the kids. It’s his speech that gets the kids from Eagle Fang to cooperate with Miyagi-Do when Miguel and Sam’s attempts fail and it’s seeing him in distress that’s the final catalyst in turning Hawk to their side. In Season 4, he convinces Hawk to return to Miyagi-Do by giving him a pep-talk and reminding him of how important their friendship is. During the following season, when Robby and Hawk get into an argument, he defuses it by pointing out that they're both "ex-assholes."
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%%* PopCulturedBadass
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* NotSoAboveItAll: Demetri is a true Miyagi-Do pacifist, [[ApologeticAttacker usually apologizing to people he physically hurts.]] But when he gets the chance to take down his long-time tormentor Kyler and his goons in the Season 5 finale, [[InUniverseCatharsis he can't help but revel in how great it felt.]] [[ThisIsForEmphasisBitch And insults Kyler as a "bitch" for good measure.]]
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Changed line(s) 118 (click to see context) from:
--> '''Demetri''': "I'm sorry about all the 'assholes'. I usually take pride in my grandiloquence, but it's an emotional time."
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--> '''Demetri''': "I'm I'm sorry about all the 'assholes'. I usually take pride in my grandiloquence, but it's an emotional time."
Changed line(s) 139 (click to see context) from:
* TechnoWizard: Demetri is very well-adept with computers and other electronic devices; it was how he able to ID Terry Silver after seeing him for the first time.[[note]]He snapped a quick photo of him when he confronted Daniel at the Miyagi-Do dojo and ran it through a facial recognition software.[[/note]] In Season 5, he gets a summer job with TechTown as a tech assistant [[spoiler:which helps him and the Miyagi-Fangs take down Terry Silver as he can access the server at the Cobra Kai dojo.]]
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* TechnoWizard: Demetri is very well-adept with computers and other electronic devices; it was how he able to ID Terry Silver after seeing him for the first time.[[note]]He snapped a quick photo of him when he confronted Daniel at the Miyagi-Do dojo and ran it through a facial recognition software.[[/note]] In Season 5, he gets a summer job with TechTown [=TechTown=] as a tech assistant [[spoiler:which helps him and the Miyagi-Fangs take down Terry Silver as he can access the server at the Cobra Kai dojo.]]
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Removing the contributions of a ban evader; please feel free to expand upon of the tropes I commented out and to add more to existing entries.
Changed line(s) 12 (click to see context) from:
A sarcastic and awkward nerd who Miguel befriends during his first day of school, Demetri is another victim of Kyler's bullying. He attends only one lesson at the Cobra Kai's dojo before quitting, but remains a part of the Cobra Kai clique until going over to Miyagi-Do to learn karate instead.
to:
A sarcastic and awkward nerd who Miguel befriends during his first day of school, Demetri is another victim of Kyler's bullying. He attends only one lesson at the Cobra Kai's dojo before quitting, but remains a part of the Cobra Kai clique until going over to Miyagi-Do to learn karate instead.
Changed line(s) 24 (click to see context) from:
* BadassBookworm: Downplayed initially. He's still a beginner and an insecure pacifist at the end of Season 2, but he knows enough to fend off Hawk's attacks and send him into a trophy case. He truly becomes this in Season 3 when his newfound confidence helps his skills improve dramatically and he fights Cobra Kai more directly.
to:
* BadassBookworm: Downplayed initially. He's still a beginner and an insecure pacifist at the end of Season 2, but he knows enough to fend off Hawk's attacks and send him into a trophy case. He truly becomes this in Season 3 when his newfound confidence helps his skills improve dramatically and he fights Cobra Kai more directly.
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* BullyingADragon: He may be a wimpy, neurotic and insecure whiner but he simply can't help mouthing off when Cobra Kai are involved.
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* BullyingADragon: He may be a wimpy, neurotic and insecure whiner but he simply can't help mouthing off when Cobra Kai are involved.
Changed line(s) 41 (click to see context) from:
* ClassicalAntiHero: Demetri's sarcasm is a mask for his insecurities, cowardice and neuroticism, but in Season 2, after joining Miyagi-Do, he's able to defend himself when threatened by opposing aggressors like Hawk.
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Changed line(s) 66 (click to see context) from:
* GiveGeeksAChance: LovableNerd Demetri and [[spoiler:former AlphaBitch Yasmine made out in the hallway at school in Season 3 after she became more sympathetic towards him after being humbled in the first season]].
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Changed line(s) 68 (click to see context) from:
* GoodIsNotNice: Note how most of the tropes here pertain to his negative qualities. In Season 1, Demetri never seeks any self improvement and encourages Eli and Miguel to do the same. He has no problem bringing down other people he deems lower than him no matter how bad an idea it is but in Season 2, while he's still whiny, insensitive and difficult to get along with, he's still a good person in his own way and is often against starting fights with other people.
to:
* GoodIsNotNice: Note how most of the tropes here pertain to his negative qualities. In Season 1, Demetri never seeks any self improvement and encourages Eli and Miguel to do the same. He has no problem bringing down other people he deems lower than him no matter how bad an idea it is but in Season 2, while he's still whiny, insensitive and difficult to get along with, he's still a good person in his own way and is often against starting fights with other people.it.
Changed line(s) 70 (click to see context) from:
* HeroicSelfDeprecation: While he may be whiny, he's quick to point out how pathetically weak and skinny he is. In Season 4, he admits that he has no idea why Yasmine is attracted to him and that he has no chance of defeating Robby or Miguel at the tournament.
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* JerkassHasAPoint: While he is clearly not cut out for Cobra Kai's intense training methods and should have known better than to keep contradicting Johnny in the middle of class, Demetri is still correct that verbally and physically abusing new clients isn't exactly a good business practice. This leads Miguel to give Johnny a dressing-down, which in turn causes Johnny to change his approach and focus more on the DareToBeBadass aspect of the Cobra Kai philosophy. This eventually becomes {{Deconstructed|Trope}}, in that even though Demetri's ''correct'' on what he says, [[InsufferableGenius he's such a snide and condescending know-it-all that even people who know he's right will ignore or shut him up just out of spite]].
to:
* JerkassHasAPoint: While he is clearly not cut out for Cobra Kai's intense training methods and should have known better than to keep contradicting Johnny in the middle of class, Demetri is still correct that verbally and physically abusing new clients isn't exactly a good business practice. This leads Miguel to give Johnny a dressing-down, which in turn causes Johnny to change his approach and focus more on the DareToBeBadass aspect of the Cobra Kai philosophy. This eventually becomes {{Deconstructed|Trope}}, in that even though Demetri's ''correct'' on what he says, [[InsufferableGenius he's such a so snide and condescending know-it-all that even people who know he's right will ignore or shut him up just out of spite]].
Changed line(s) 88 (click to see context) from:
* LovableNerd: Demetri is definitely a flawed person, but he's also very sympathetic, funny, and a genuinely noble friend who TookALevelInBadass to even be able to fight off bullies and bring out the best in [[spoiler:Yasmine]].
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Changed line(s) 110,112 (click to see context) from:
* OddFriendship:
** He and Robby really don't have anything in common, but Robby is happy to hang out with him outside of Miyagi-do lessons and defend him from getting attacked by Cobra Kai nonetheless... at least until Robby himself joins Cobra Kai. By Season 4, neither recall their previous friendship, despite Demetri being one of the very few characters who didn't wrong Robby in any way.
** Moon is a bubbly GirlyGirl and Demetri is a cynical {{Nerd}} and in Season 2, they two actually have a platonic relationship with each other and not only is she humored by Demetri, she also breaks up with Hawk when she found that he bullied him over a Yelp review. And in Season 3, (along with Yasmine) she takes genuine interest in Demetri's Lego volcano and also hates to see it get destroyed because of Hawk.
** He and Robby really don't have anything in common, but Robby is happy to hang out with him outside of Miyagi-do lessons and defend him from getting attacked by Cobra Kai nonetheless... at least until Robby himself joins Cobra Kai. By Season 4, neither recall their previous friendship, despite Demetri being one of the very few characters who didn't wrong Robby in any way.
** Moon is a bubbly GirlyGirl and Demetri is a cynical {{Nerd}} and in Season 2, they two actually have a platonic relationship with each other and not only is she humored by Demetri, she also breaks up with Hawk when she found that he bullied him over a Yelp review. And in Season 3, (along with Yasmine) she takes genuine interest in Demetri's Lego volcano and also hates to see it get destroyed because of Hawk.
to:
** He and Robby really don't have anything in common, but Robby is happy to hang out with him outside of Miyagi-do lessons and defend him from getting attacked by Cobra Kai nonetheless... at least until Robby himself joins Cobra Kai. By Season 4, neither recall their previous friendship, despite Demetri being one of the very few characters who didn't wrong Robby in any way.
** Moon is a bubbly GirlyGirl and Demetri is a cynical {{Nerd}} and in Season 2, they two actually have a platonic relationship with each other and not only is she humored by Demetri, she also breaks up with Hawk when she found that he bullied him over a Yelp review. And in Season 3, (along with Yasmine) she takes genuine interest in Demetri's Lego volcano and also hates to see it get destroyed because of Hawk.
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* PopCulturedBadass: Not only does he know how to kick butt thanks to Daniel's training, he never loses his nerdy habit of frequently using pop-culture references, like ''Film/HarryPotter'', ''Series/GameOfThrones'', ''Franchise/TeenageMutantNinjaTurtles'' and ''Series/DoctorWho''.
* ProudToBeANerd: Unlike Eli, Demetri embraces his nerdiness and wished for Eli to be binary brothers with him again but sadly for him, Eli rejects it and sticks to be being an aggressive Cobra Kai fighter. [[spoiler:At least until Season 3.]]
* ProudToBeANerd: Unlike Eli, Demetri embraces his nerdiness and wished for Eli to be binary brothers with him again but sadly for him, Eli rejects it and sticks to be being an aggressive Cobra Kai fighter. [[spoiler:At least until Season 3.]]
to:
* ProudToBeANerd: Unlike Eli, Demetri embraces his nerdiness and wished for Eli to be binary brothers with him again but sadly for him, Eli rejects it and sticks to be being an aggressive Cobra Kai fighter. [[spoiler:At least until Season 3.]]
%%* ProudToBeANerd
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* StepfordSnarker: Often uses sarcasm as a way to shield his insecurities, cynicism and neuroses.
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* TookALevelInKindness: In seasons 1 and 2, he is, to put it quite bluntly... a pessimistic, condescending know-it-all who hates the fact that Hawk changed his persona in order to become more confident (albeit becoming a gigantic {{Jerkass}} in the process) and has no problem being a massive coward when it suits him. Come Season 3 though, he's ''far'' more confident in himself. While it does make him a little brash still, this actually serves to make him far easier to be around as he's more relaxed and less neurotic. He's the one helping to lead the charge at the end of the season to [[spoiler:merge the two dojos]] and he doesn't try to turn it into an AllTakeAndNoGive situation like he's accustomed to. In fact, it's his swagger that allows it to really work. That's right friends, somewhere along the way Demetri actually became cool enough to even have [[spoiler:Yasmine be potentially interested in being his girlfriend]].
* WaxOnWaxOff: Demetri figures out the purpose of the training method, but he whines the whole time, gets a splinter while sanding floors, and finally has to be walked through the moves slowly while Daniel explains them.
* WaxOnWaxOff: Demetri figures out the purpose of the training method, but he whines the whole time, gets a splinter while sanding floors, and finally has to be walked through the moves slowly while Daniel explains them.
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* TookALevelInKindness: Probably the only person in history that falls under this trope by way of becoming more outwardly aggressive. In seasons 1 and 2, he is, the previous 2 Seasons, as seen in the tropes above, Demetri is to put it quite bluntly... bluntly...a pessimistic, condescending know-it-all who negative, passive-aggressive asshole that hates the fact that Hawk changed his persona in order to become more confident (albeit away from being his whipping boy (albeit...becoming a gigantic {{Jerkass}} in the process) and has no problem being a massive coward when it suits him. Come Season 3 though, off the heels of beating Hawk in a skirmish he's ''far'' FAR more confident in himself. While it does make him a little brash grating still, this actually serves to make him far easier to be around as he's more relaxed comfortable in his skin and less neurotic. more accepting of how everyone else functions. Then once he's humbled a bit by [[spoiler:Hawk breaking his arm]] he comes to a good middle ground. He's the one helping to lead the charge at the end of the season to [[spoiler:merge the two dojos]] and he doesn't try to turn it into an AllTakeAndNoGive situation like he's accustomed accostomed to. In fact, fact it's his swagger that allows it to really work. That's right friends, somewhere along the way Demetri actually became cool enough to even have [[spoiler:Yasmine be potentially interested in being his girlfriend]].
* WaxOnWaxOff: Demetri figures out the purpose of the training method, but he whines the whole time, gets a splinter while sanding floors, and finally has to be walked through the moves slowly while Daniel explains them.cool.
* WaxOnWaxOff: Demetri figures out the purpose of the training method, but he whines the whole time, gets a splinter while sanding floors, and finally has to be walked through the moves slowly while Daniel explains them.
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* TechnoWizard: Demetri is very well-adept with computers and other electronic devices; it was how he able to ID Terry Silver after seeing him for the first time.[[note]]He snapped a quick photo of him when he confronted Daniel at the Miyagi-Do dojo and ran it through a facial recognition software.[[/note]] In Season 5, he gets a summer job with TechTown as a tech assistant [[spoiler:which helps him and the Miyagi-Fangs take down Terry Silver as he can access the server at the Cobra Kai dojo.]]
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* DemotedToExtra: While still a notable presence in Miyagi-Do, Demitri's role in Season 5 is smaller than it was compared to the previous three seasons, which is evident as he's demoted to series recurring here.
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[[Characters/TheKarateKidCobraKaiAndAssociates Cobra Kai and Associates]] | [[Characters/TheKarateKidEagleFangAndAssociates Eagle Fang and Associates]] | [[Characters/TheKarateKidMiyagiDoAndAssociates Miyagi-Do and Associates]] | [[Characters/TheKarateKidTheLaRussoFamily The [=LaRusso=] Family]] | [[Characters/TheKarateKidOtherCharacters Other Characters]]-]]]]]
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[[Characters/TheKarateKidMiyagiDoAndAssociates Miyagi-Do and Associates]] | [[Characters/TheKarateKidCobraKaiAndAssociates Cobra Kai and Associates]] | [[Characters/TheKarateKidEagleFangAndAssociates Eagle Fang and Associates]] | [[Characters/TheKarateKidMiyagiDoAndAssociates Miyagi-Do and Associates]] | [[Characters/TheKarateKidTheLaRussoFamily The [=LaRusso=] Family]] | [[Characters/TheKarateKidOtherCharacters Other Characters]]-]]]]]
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* TheSmartGuy: His dedication to physical training is inversely proportional to his dedication to his academic studies and is the most inclined to use his head in a fight. He is also quick to see the purpose of Miyagi-Do's [[WaxOnWaxOff training methods]] that even Robby didn't recognize at first.
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* TheSmartGuy: His dedication to physical training is inversely proportional to his dedication to his academic studies and is the most inclined to use his head in a fight. He is also quick the only character in the franchise to see immediately understand the purpose of Miyagi-Do's [[WaxOnWaxOff unorthodox training methods]] that even Robby didn't recognize at first.methods]].
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidMiguelDiaz Miguel Diaz]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | [[Characters/TheKarateKidDemetriAlexopoulos Demetri Alexopoulos]]\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidMiguelDiaz Miguel Diaz]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | [[Characters/TheKarateKidDemetriAlexopoulos Demetri Alexopoulos]]\\'''Demetri Alexopoulos'''\\
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[[WMG:[[center:[-''Series/CobraKai'' '''Main Character Index'''\\
[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidMiguelDiaz Miguel Diaz]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] |
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* NoFullNameGiven: Until Season 3, Demetri was the only main cast member whose last name had never been revealed, the only clue the audience has being that he's grouped with Miguel as part of the "Last Names A-G" cohort for their SAT practice test. [[spoiler:In the season 4 tournament, the announcer finally blurts out his name as "Alexopoulos".]]
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* NoFullNameGiven: Until Season 3, 4, Demetri was is the only main cast member whose last name had never been is not revealed, with the only clue the audience has being that he's grouped with Miguel as part of the "Last Names A-G" cohort for their SAT practice test. [[spoiler:In It's finally revealed at the season 4 All Valley tournament, when the announcer finally blurts out MC announces his last name as is "Alexopoulos".]]
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | |[[Characters/TheKarateKidTerrySilver Terry Silver]] |[[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | |[[Characters/TheKarateKidTerrySilver [[Characters/TheKarateKidTerrySilver Terry Silver]] |[[Characters/TheKarateKidRobbyKeene | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidCobraKaiAndAssociates Cobra Kai and Associates]] | [[Characters/TheKarateKidEagleFangAndAssociates Eagle Fang and Associates]] | [[Characters/TheKarateKidMiyagiDoAndAssociates Miyagi-Do and Associates]] | [[Characters/TheKarateKidOtherCharacters Other Characters]]-]]]]]
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[[Characters/TheKarateKidCobraKaiAndAssociates Cobra Kai and Associates]] | [[Characters/TheKarateKidEagleFangAndAssociates Eagle Fang and Associates]] | [[Characters/TheKarateKidMiyagiDoAndAssociates Miyagi-Do and Associates]] Associates]] | [[Characters/TheKarateKidTheLaRussoFamily The [=LaRusso=] Family]] | [[Characters/TheKarateKidOtherCharacters Other Characters]]-]]]]]
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | |[[Characters/TheKarateKidTerrySilver Terry Silver]][[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | |[[Characters/TheKarateKidTerrySilver Terry Silver]][[Characters/TheKarateKidRobbyKeene Silver]] |[[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidRobbyKeene | |[[Characters/TheKarateKidTerrySilver Terry Silver]][[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/TheKarateKidDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/TheKarateKidJohnnyLawrence Johnny Lawrence]] | [[Characters/TheKarateKidJohnKreese John Kreese]] | [[Characters/TheKarateKidRobbyKeene Robby Keene]] | [[Characters/TheKarateKidTerrySilver Terry Silver]] | [[Characters/TheKarateKidEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/TheKarateKidToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/CobraKaiDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/CobraKaiJohnnyLawrence Johnny Lawrence]] | [[Characters/CobraKaiJohnKreese John Kreese]] | [[Characters/CobraKaiRobbyKeene Robby Keene]] | [[Characters/CobraKaiEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/CobraKaiToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
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[[Characters/CobraKaiCobraKaiAndAssociates Cobra Kai and Associates]] | [[Characters/CobraKaiEagleFangAndAssociates Eagle Fang and Associates]] | [[Characters/CobraKaiMiyagiDoAndAssociates Miyagi-Do and Associates]] | [[Characters/CobraKaiOtherCharacters Other Characters]]-]]]]]
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[[WMG:[[center:[-''Series/CobraKai'' '''Main Character Index'''\\
[[Characters/CobraKaiDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/CobraKaiJohnnyLawrence Johnny Lawrence]] | [[Characters/CobraKaiJohnKreese John Kreese]] | [[Characters/CobraKaiRobbyKeene Robby Keene]] | [[Characters/CobraKaiEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/CobraKaiToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
'''Dojos and Others'''\\
[[Characters/CobraKaiCobraKaiAndAssociates Cobra Kai and Associates]] | [[Characters/CobraKaiEagleFangAndAssociates Eagle Fang and Associates]] | [[Characters/CobraKaiMiyagiDoAndAssociates Miyagi-Do and Associates]] | [[Characters/CobraKaiOtherCharacters Other Characters]]-]]]]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/ck_s4_demetri.png]]
[[caption-width-right:350: ''"I'm at peace with my depression. Last thing I need to be is suicidal."'']]
->'''Played by:''' Gianni [=DeCenzo=]
->'''Appearances:''' ''Series/CobraKai''
->''"My whole life I've been, let's just say... less than popular. But at least I had a few friends. And then Cobra Kai comes to town, and the next thing I know, my friends are taking karate and becoming alpha jerks. I'm literally being threatened by my best friend. I just wanted to show I could fight back."''
A sarcastic and awkward nerd who Miguel befriends during his first day of school, Demetri is another victim of Kyler's bullying. He attends only one lesson at the Cobra Kai's dojo before quitting, but remains a part of the Cobra Kai clique until going over to Miyagi-Do to learn karate instead.
----
[[foldercontrol]]
[[folder:A-J]]
* AccentuateTheNegative: Demetri is a negative person in general and complains a lot, but Daniel later points out to him that it's a good trait of his, because that means he is always prepared for the worst. Which plays into his fighting style as he's fairly good at [[StoneWall predicting and intercepting attacks]]
* AintTooProudToBeg: When Hawk is about to break Demetri's arm, Demetri sincerely begs him not to do it. Sadly, he ends up with a proximal radius fracture after Hawk breaks it.
* AffectionateNickname: Chris starts calling him "Meet" (possibly 'Meat') when they become friends.
* AnalogyBackfire: A RunningGag through his time at Miyagi-Do. Whenever he makes a comparison to a specific action on ''Series/GameOfThrones,'' Daniel neatly counters it.
* ApologeticAttacker: When Hawk fights him in the finale of Season 2, Demetri manages to defend himself and whispers, "No hard feelings", before throwing him against the school's trophy cabinet and kicking him right into it. Afterwards, he apologizes again.
* AwesomenessByAnalysis: Daniel calls Demetri "the most neurotic person I have ever met," then states that this can be turned into a positive: Demetri notices things, sees tiny details everyone else misses, and this can be applied to give hyperaware insight into what an opponent is about to do. When Demetri finally commits to actually learning (and defending himself) with karate, he proves capable of reading his opponents. Daniel compares it to "[[ComicBook/SpiderMan Spidey-Sense]]" (which Demetri immediately corrects to "''Spider''-Sense").
* BadassPacifist: Demetri is one of few students to not instigate a fight against an enemy because of his passionate hatred for violence and he only fights back when he feels attacked or provoked which means that he's also a MartialPacifist as well.
* BadassBookworm: Downplayed initially. He's still a beginner and an insecure pacifist at the end of Season 2, but he knows enough to fend off Hawk's attacks and send him into a trophy case. He truly becomes this in Season 3 when his newfound confidence helps his skills improve dramatically and he fights Cobra Kai more directly.
* BadLiar: He's a terrible liar. His attempt to act all "buddy-buddy" with Hawk when Counselor Blatt catches his Miyagi-Do group and Hawk's Cobra Kai group staring each other down clearly doesn't convince her, nor does his attempts to claim not to know Sam when she lashes out at Counselor Blatt after the soccer game. Later, he awkwardly tries to claim they're doing "study group" when Amanda catches Sam training the Miyagi-Dos in secret. When Sam and Miguel catch him making out with Yasmine, he awkwardly tries to deny his attraction to Yasmine but gives up any attempt at it once she's out of sight.
* BashBrothers: [[spoiler:After he and Hawk reconcile, the two prove to be a highly effective fighting team as they dispatch several Cobras with their combined skills.]]
* BeautyIsBest: Demetri knows exactly what kind of AlphaBitch that Yasmine is in Season 1 and remains attracted to her, anyway. Although [[spoiler:being a slightly perverted DoggedNiceGuy to her seems to be paying off as of Season 3, the trope gets subverted since Demetri also seems to finally value for her for something other than her looks]].
-->'''Demetri:''' I don't care if Yasmine is the meanest girl in school, I'd kill both of you just to get her to spit in my face.
* BigBrotherInstinct: While everyone else is defending themselves at in the Season 3 brawl at Sam’s house, Demetri pulling double duty also protecting Nathaniel and Bert from the much larger Cobra Kai assailants. He does pretty well at first.
* BirdsOfAFeather: [[spoiler:Yasmine]] and Demetri might seem like an OppositesAttract type of kind of couple, but honestly they are both snarky, mouthy and condescending teens that have suffered from public humiliation so they manage to bond over that and see the good in each other.
* BookSmart: Demetri's an academic and studious nerd and despite his pessimistic nature, he does have his ambitions and when he gets detention for the first time, he's only focused on how it'll hurt his permanent record.
-->'''Demetri:''' I gotta do well on these so I do well on the actual test so I get into a good college, which will lead to a good internship, then a high-paying job, and then, after a couple promotions, I should have enough confidence to get a super-hot girl. You got the karate thing. I gotta play the long game.
* BrainyBrunet: Demetri is a dark haired teen and is TheSmartGuy of Miyagi-Do.
* BromanticFoil: To Miguel. His complete lack of any social skills and hilariously inept attempts at flirting contrast Miguel's growing confidence and ability to develop a relationship with Sam. When he and Yasmine form a BetaCouple, their SlapSlapKiss dynamic contrasts [[OfficialCouple Miguel and Sam's]] more affectionate interactions.
* BullyAndWimpPairing: As soon as Eli became Hawk, he becomes Demetri's worst enemy after he writes a bad review of the Cobra Kai dojo which angers Hawk and for the most part tries to make Demetri's life miserable but luckily they're able to reconcile, set aside their differences and fight as a team.
* BullyingADragon: He may be a wimpy, neurotic and insecure whiner but he simply can't help mouthing off when Cobra Kai are involved.
** His bragging that Johnny works for the students because they pay him earns him a swift asskicking.
** His telling Kreese his cobra tattoo (a memento of fellowship with his war buddies) was anatomically incorrect was equally dumb (though more InnocentlyInsensitive than deliberate provocation).
** And his lengthy speech humiliating Hawk, [[spoiler:who'd kicked his ass once already by this point and was only holding back after a telling-off from Johnny]], leads to [[spoiler:Hawk going after him during the school brawl and nearly kicking his face in]].
* ButtMonkey: Almost all of his training at Miyagi-Do leads to him getting beat up. Even in Season 3, he gets cruelly mocked by Kyler after Hawk breaks his arm.
* ClassicalAntiHero: Demetri's sarcasm is a mask for his insecurities, cowardice and neuroticism, but in Season 2, after joining Miyagi-Do, he's able to defend himself when threatened by opposing aggressors like Hawk.
* TheComicallySerious: Subverted. Demetri may be a facetious, awkward and sarcastic jokester while he's too insecure to put in effort for karate, but he's also very rational and the most studious of the members of Miyagi-Do.
* CoolLoser: He seems to have become this by Season 3. While he is still regularly picked on and laughed at by other students, most of them still seem to remember Demetri's involvement in the school fight (i.e. beating Hawk) and recognized that he was a legitimate karateka. And Demetri, with his newfound confidence, is seen more often winning others over with his passionate pursuit of academics and dorky interests.
* CowardlyLion: His defining trait. He joins Miyagi-Do because he doesn't want to be perceived as a pussy. While it takes him forever and in a year, he sticks solidly with his training, and (faced with an OutsideContextProblem where he tries to get a teacher's help) it pays off in no small way during the school brawl when he disposes of Hawk with one good kick.
* CurbStompCushion: He doesn't score a single point against Robby when they face off at the All-Valley in Season 4 but still gives a pretty good showing and manages a rather impressive takedown on his opponent.
* TheCynic: Demetri is pessimistic and always finds something to complain about.
* ADayInTheLimelight: Before "All In", Demetri functions pretty low on the recurring cast of characters, always a tagalong but very ineffective at everything. This is the first episode that spends time focusing on him, his response to the Miyagi-Do training and his feelings on what's happened to Miguel and Eli/Hawk.
* DeadpanSnarker: A good chunk of his EstablishingCharacterMoment is him making snarky quips. It's eventually {{Deconstructed|Trope}} in Season 2; a lot of the things Demetri [[JerkassHasAPoint brings up are accurate and sensible]], but his deliveries are so snide and condescending that people shut him down out of not entirely undeserved spite (or in Kreese's case, sock him in the nose).
* DefectorFromDecadence: Demetri joins Miyagi-Do in Season 2 after Kreese punches his face in when he goes to sign up for lessons at Cobra Kai again.
* DitzyGenius: Demetri may be the smartest teenager in the show but he's also the most socially oblivious and quite often he doesn't know when to shut up.
* TheDogBitesBack: After Hawk rebukes Demetri's sincere attempt at helping him move on from Moon (which included Hawk spilling his drink all on top of Demetri and spitefully chides him for still being a "pussy"), Demetri proceeds to humiliate Hawk in front of the whole party by going on a lengthy diatribe of embarrassing secrets and trivia about Hawk that he learned when they were still friends. Come their confrontation during the school brawl, Demetri endures Hawk's relentless assaults and wins when he kicks his opponent into a trophy cabinet. Once everyone's suspensions are over, Demetri has gained a lot of social standing at Hawk's expense.
* DorkKnight: Demetri is one of the most noble characters in the show and he's the nerdiest of all the teens.
* EasilyForgiven: Despite being continuously antagonized by Hawk throughout Season 2 and 3, Demetri still seems to want him to return to being his friend. [[spoiler:Even after Hawk breaks his arm during the laser tag fight, Demetri is neither angry or vengeful and persists on getting Eli back. This cumulates to the brawl at the [=LaRusso=] house where Hawk saves Demetri and the two amicably work together to neutralize the rest of the Cobra Kai fighters.]]
* TheEeyore: Demetri tends to expect the worst to happen and generally acts pessimistic even when things are going good. Daniel flat out tells Demetri he's the most neurotic person he's ever met.
* EntitledBastard: When Miguel tells him to stop mouthing off to Johnny during the Cobra Kai lesson, he refuses and says Johnny can't do anything about it believing that, as the kids are paying him, he works for them. Naturally, this earns him a flip throw from Johnny. Saying something like that in ''any'' dojo will likely get you kicked out, as a very important aspect of martial arts is ''respect'', whether it be towards the dojo, sensei, or students.
* ExtravertedNerd: Being in Miyagi-Do has allowed Demetri to shed the burden of being a social outcast. Gaining some friends as well (including Sam, Chris, Nathaniel) as a way to defend himself from bullies if he needs to leads him to become one of these by Season 3.
* FatalFlaw: Self-confidence, or moreso, the lack of it. He spends the better part of the first two seasons constantly complaining about the things he can't do, and generally tries to drag down his friends to his level. Once he takes out Hawk in the Season 2 finale, he gains some confidence and starts quickly excelling more at Karate and catching Yasmine's eye. By Season 4 he's at his most confident, but he still doesn't think too highly of himself even calling himself a Side Character compared to Miguel or Eli being TheAce. Even so, he has a highly impressive performance in the Skills Competition and makes it to the semifinals of the All-Valley. Demetris is highly competent when he puts his mind through something, showing he can be an effective leader, an excellent fighter and a great catch for a girl but the only thing that holds him back is his continued belief in being below others. The show subtly implies that if Demetri were to ever get over these last mental blocks that he'd be one of the best fighters in the entire cast with his reach and predictive abilities being stand out attributes of his.
* TheFinickyOne: Subverted. While Demetri clearly has a quirky sense of humor and wittiness, he's a ButtMonkey who hardly lets go of his neurotic nature and is often the voice of reason when he's with his friends.
* FireForgedFriends: With Chris. He’s rightfully the least trusting of the former Cobra Kai students when they join Miyagi Do. But through working together to help clean up the Dojo after Hawk vandalized it, they’re able to overcome their differences. Exemplified when Hawk and co. try to attack Demetri at a party after the latter embarrasses the former and this time Chris comes to his defense in contrast to when he followed Hawk in his assault on Demetri at the mall. They’re also seen briefly agreeing to get an authority teacher involved early in the school brawl rather than escalating it further. By Season 3, both Chris and Demetri are rarely seen without each other, whether they're training, hanging out, or preparing for a fight.
* FirstNameBasis: Demetri continues to refer to Hawk as 'Eli' well after his transformation, both to spite his former friend and to show his dispproval of what Eli had [[HeWhoFightsMonsters allowed himself to become]].
* {{Foil}}: To Hawk in general. The two start out as best friends, with Demetri being a mouthy InsufferableGenius while Eli is a ShrinkingViolet who prefers to let Demetri do all the talking. Demetri discourages Miguel's attempts to stand up to Kyler, feeling he's better off keeping his head down and avoiding bullies, while Eli is impressed by his bravery. When the two join Cobra Kai, Demetri is put off by Johnny's TrainingFromHell and quits, while Eli embraces it and takes on the "Hawk" persona. Demetri is ProudToBeAGeek, while Hawk tries to bury his nerdy past, and starts to view Demetri as [[ShadowArchetype the embodiment of everything he hates about himself]]. In terms of their fighting style, Hawk focuses on attack, while Demetri is almost purely defensive.
* FragileSpeedster: If Daniel is to be believed, Demetri's speed (when pressured) can match some of the best Olympic athletes. [[note]]All-time 100 yard dash records for men are just under ten seconds.[[/note]]
-->'''Daniel:''' I heard you ran the hundred yard dash in under ''ten seconds.''
* GenreSavvy: Being BookSmart and a huge geek, Demetri immediately recognizes the purpose of Daniel's WaxOnWaxOff training. It doesn't make him any less happy about it, though.
* GiveGeeksAChance: LovableNerd Demetri and [[spoiler:former AlphaBitch Yasmine made out in the hallway at school in Season 3 after she became more sympathetic towards him after being humbled in the first season]].
* GoodCounterpart: To Eli/Hawk in Season 2 and 3.
* GoodIsNotNice: Note how most of the tropes here pertain to his negative qualities. In Season 1, Demetri never seeks any self improvement and encourages Eli and Miguel to do the same. He has no problem bringing down other people he deems lower than him no matter how bad an idea it is but in Season 2, while he's still whiny, insensitive and difficult to get along with, he's still a good person in his own way and is often against starting fights with other people.
* TheHeart: Yes believe it or not, the MouthyKid who dismisses others as an act of self-defense becoming this for the kids. It’s his speech that gets the kids from Eagle Fang to cooperate with Miyagi-Do when Miguel and Sam’s attempts fail and it’s seeing him in distress that’s the final catalyst in turning Hawk to their side. In Season 4, he convinces Hawk to return to Miyagi-Do by giving him a pep-talk and reminding him of how important their friendship is.
* HeroicSelfDeprecation: While he may be whiny, he's quick to point out how pathetically weak and skinny he is. In Season 4, he admits that he has no idea why Yasmine is attracted to him and that he has no chance of defeating Robby or Miguel at the tournament.
* HypocriticalHumor:
** Calling Eli "Lip" is totally uncalled for and a Nazi move. Calling Sam the "blowjob girl" is fair game.
** When he attempts to join Cobra Kai for the second time, he tells Kreese that he has a lot of personal space issues that the other students are just going to have to deal with... then notices Kreese's arm tattoo and starts touching it. As you could predict, Kreese punches him in the face.
* IJustWantToBeBadass: After Demetri continues whining during training, Daniel asks him why he decided to join Miyagi-Do. Demetri says it's because all of his friends are training in martial arts and he felt pressured to learn just so he could show them that he wasn't weak. But his real motivation is...
* IJustWantToHaveFriends: The only friends he has (Miguel and Eli) are up to their necks in Cobra Kai, and Demetri has tried and failed twice to adapt to their new social activity. Finding Cobra Kai completely unsuited to him, Demetri came to Miyagi-Do, hoping less to learn badass martial arts and more to find new friends to hang out with.
* IKnowYoureInThereSomewhereFight: Despite their falling out in Season 2, Demetri continuously attempts to reach out to [[FirstNameBasis Eli]] even as Hawk repeatedly snubs and bullies him. [[spoiler:Demetri finally succeeds at the end of Season 3 during the house brawl.]]
* ImNotAfraidOfYou: When Hawk confronts him in the mall in Season 2, Demetri isn't intimidated and calls him by his real name to make a point. ''Then'' Hawk kicks him...
* InsistentTerminology: Demetri will only refer to Hawk as Eli. At first, it's because they're lifelong friends and he's confused by the latter's new look and attitude. Later on, it's to remind the now bully that he remembers how his life was before Cobra Kai.
* InsufferableGenius: Demetri is a very intelligent person but he's obnoxious due to how condescending, impudent and brash he is. Demetri is rational and perceptive, and his observations are often spot-on, but his only two modes of communication are whining and snarking. This leads to people shutting him down-or-up at every opportunity, even when they know he's right, just because he comes across as so utterly insufferable.
* ItRunsInTheFamily: During Moon's party, Demetri mentions his family's spare air mattress, which his mother dubbed [[spoiler:"Eli's waterbed" due to the other boy's chronic bedwetting]]. If Demetri is telling the truth, he may have picked up some of his InnocentlyInsensitive tendencies from her.
* JerkassHasAPoint: While he is clearly not cut out for Cobra Kai's intense training methods and should have known better than to keep contradicting Johnny in the middle of class, Demetri is still correct that verbally and physically abusing new clients isn't exactly a good business practice. This leads Miguel to give Johnny a dressing-down, which in turn causes Johnny to change his approach and focus more on the DareToBeBadass aspect of the Cobra Kai philosophy. This eventually becomes {{Deconstructed|Trope}}, in that even though Demetri's ''correct'' on what he says, [[InsufferableGenius he's such a snide and condescending know-it-all that even people who know he's right will ignore or shut him up just out of spite]].
* JerkWithAHeartOfGold: He's certainly an insensitive, condescending and dismissive person who whines about everything and often mouths off karate teachers but he's always fiercely devoted to his friends, especially when he's quick to forgive and befriend Hawk after being being bullied by him for so long.
[[/folder]]
[[folder:L-Y]]
* TheLancer: [[spoiler:With Daniel being preoccupied with other things during the season and Robby in juvie, he becomes the de-facto second-in-command for Miyagi-do as Sam takes up the leadership position. Notably, he's the first one to agree to her and Miguel's proposal of combining forces with Eagle Fang to take down the corrupted Cobra Kai.]]
* LikeBrotherAndSister: Sam and Demetri have a close friendship where Sam is like a protective older sister and is always the one to stand up for him.
* LovableNerd: Demetri is definitely a flawed person, but he's also very sympathetic, funny, and a genuinely noble friend who TookALevelInBadass to even be able to fight off bullies and bring out the best in [[spoiler:Yasmine]].
* LovableCoward: At first, Demetri was a comically pathetic coward that would rather run away from his problems, instead of trying to defend himself but thanks to Daniel guiding him, he manages to become a lot more braver and be less insecure about himself. Still, he'll readily admit that he prefers not to get into a fight if he can help it.
* MartialPacifist: Despite training at Miyagi-Do, when he's targeted by Hawk during the school brawl, his first instinct [[CowardlyLion is to run]] rather than fight. When cornered, he focuses on [[StoneWall blocking]] rather than attacking. It's only after Hawk [[TheBerserker refuses to let up]] that Demetri [[StrongerThanTheyLook takes him down with a kick through a glass trophy case.]]
* MasculineGirlFeminineBoy: The feminine boy to Sam's masculine girl. Mainly since Sam is a more trained and skilled fighter than Demetri is, more aggressive than him and is often one to look after him.
* MinoredInAsskicking: While he is loyal to Miyagi-Do and takes its philosophy and teachings to heart, Demetri's biggest passions will always be with his nerdy interests and geeky cultural fandoms.
* MouthyKid: His penchant for snarking can cause him to veer into this, especially during his one lesson at Cobra Kai. Johnny does not take kindly to his sassy attitude. ''At all.'' He even remembers him as "that mouthy one" when Miguel tries to warn him about Kreese's increasingly violent behavior.
-->'''Demetri:'''I say a lot of things which tends to be a polarizing attribute mine.
* MoralityPet:
** He becomes this to Yasmine in Season 3, as she takes pity on him when she sees him being bullied by Kyler and proves that she's [[TookALevelInKindness Taken a Level in Kindness]] by fixing the embrassing drawing that Kyler put on his cast.
** [[spoiler:Hawk makes a HeelFaceTurn in the Season 3 finale when he sees Demetri in trouble during the house brawl and decides to help him instead of breaking his arm again.]]
* NervousWreck: Demetri is by nature a pretty neurotic person and he whines about the minimal things constantly.
-->'''Daniel:''' ''[to Demetri]'' You are the most neurotic person that I know.
* NiceGuy: Know-it-all tendencies aside, Demetri is a good person who's super loyal to his friends and was able to forgive Eli for treating him like crap and turning against him. He's easily the least likely to strike hard against another person unless he needs to defend himself and even apologizes to Hawk for kicking him into the school's trophy case.
* NiceJobBreakingItHero: The one time Demetri goes out of his way to antagonize Hawk in retribution, by telling embarrassing stories at a party, ultimately ends up being the powder keg to egg on the rest of Cobra Kai during the brawl.
* NoFullNameGiven: Until Season 3, Demetri was the only main cast member whose last name had never been revealed, the only clue the audience has being that he's grouped with Miguel as part of the "Last Names A-G" cohort for their SAT practice test. [[spoiler:In the season 4 tournament, the announcer finally blurts out his name as "Alexopoulos".]]
* NoSenseOfPersonalSpace:
** He starts touching Kreese's arm without an invitation to examine his snake tattoo, just after explaining that [[HypocriticalHumor he needs other students to respect his boundaries]] while he's taking karate lessons.
** When the Miyagi-Do students are sheltering under a tree from a heatwave, he wipes the sweat on his forehead off on Sam's shoulder, which she is visibly disgusted by.
* NoSocialSkills: A lot of Demetri's awkwardness stems from his lack of social awareness. He doesn't seem to realize just how snide and condescending his lecturing can come across and he's absolutely hopeless when it comes to flirting with girls. He also decides to bring ''TabletopGame/TrivialPursuit'' to Moon's party, clearly missing the point that most of the teens are going to be drinking.
* NobleMaleRoguishMale: The noble male to Hawk's roguish male as Hawk became more aggressive and bullies others for petty reasons while Demetri preferred to be more worldly and only fights back to defend himself.
* NonActionGuy: He was pretty much Daniel's weakest student and he was unable to physically defend himself against bullies. This is exemplified in Season 2, when he was being attacked by the Cobra Kai in the mall; while Robby and Sam fought back against the attackers in order to save him, Demetri was mostly just standing around avoiding getting hit. Luckily, he was able to improve on his fighting skills, especially after his defeat of Hawk in the school brawl.
* NonActionSnarker: Demetri is pretty much Daniel's snarkiest student and is the most reluctant to fight off his enemies unless it seems necessary.
* OddFriendship:
** He and Robby really don't have anything in common, but Robby is happy to hang out with him outside of Miyagi-do lessons and defend him from getting attacked by Cobra Kai nonetheless... at least until Robby himself joins Cobra Kai. By Season 4, neither recall their previous friendship, despite Demetri being one of the very few characters who didn't wrong Robby in any way.
** Moon is a bubbly GirlyGirl and Demetri is a cynical {{Nerd}} and in Season 2, they two actually have a platonic relationship with each other and not only is she humored by Demetri, she also breaks up with Hawk when she found that he bullied him over a Yelp review. And in Season 3, (along with Yasmine) she takes genuine interest in Demetri's Lego volcano and also hates to see it get destroyed because of Hawk.
* OffingTheMouth: [[DownplayedTrope While Johnny only bodyslams him for talking out of turn]], the argument can easily be made that Demetri brought Johnny's wrath upon himself. Later episodes shows Demetri's mouth get him into trouble more than once.
* OnlySaneMan:
** The only one in Miguel’s group to consistently display common sense, particularly during Season 1. He tries in vain to rein them in when they start turning into jackasses. The tournament proves him right.
** In Season 2, Demetri is the one student of both schools who actively tries to avoid hostile confrontations. When the brawl between the two schools breaks out, Demetri's response is to run and get a teacher to try and diffuse the fight.
** In Season 3, while he does follow Sam as she leads Miyagi-Do, Demetri is the only one to question if their actions are necessary.
** In Season 4, he's well aware that despite Daniel's optimism and encouragement, Miyagi-do is truly at a disadvantage with the All Valley's new male combat division format. Thus, he convinces [[spoiler:Eli]] to join up.
* OOCIsSeriousBusiness: When it looks like negotiations between Miyagi-do and Eagle Fang are going south, Demetri suddenly raises his voice and starts dropping curse words like crazy during his RousingSpeech (see below). For an awkward kid who takes pride in his eloquent speaking, to hear him speak so loud and coarsely, everyone present was taken aback, and after his speech he even apologized for the language.
--> '''Demetri''': "I'm sorry about all the 'assholes'. I usually take pride in my grandiloquence, but it's an emotional time."
* OvershadowedByAwesome: Demetri has made incredible progress in his karate skills by the time of Season 4, and puts in a very impressive performance to reach the All Valley semifinals. Unfortunately, he's not on the level of [[TheAce the other three semi finalists]], namely Miguel, who Demetri explicitly acknowledges has never been beaten in a fair fight, Hawk, whom he considers the Franchise/{{Batman}} to his Alfred, and Robby, whom he treats as TheDreaded. He ends up being defeated by Robby in a 3-0 shutout, though Daniel is still [[SoProudOfYou proud of him]] for how far he has come.
* PluckyComicRelief: While he's meant to be the rational intellectual of the the group of Miyagi-Do students, he provides a lot of humor to the show due to how much of a nerdy, awkward goofball he is.
* PopCulturedBadass: Not only does he know how to kick butt thanks to Daniel's training, he never loses his nerdy habit of frequently using pop-culture references, like ''Film/HarryPotter'', ''Series/GameOfThrones'', ''Franchise/TeenageMutantNinjaTurtles'' and ''Series/DoctorWho''.
* ProudToBeANerd: Unlike Eli, Demetri embraces his nerdiness and wished for Eli to be binary brothers with him again but sadly for him, Eli rejects it and sticks to be being an aggressive Cobra Kai fighter. [[spoiler:At least until Season 3.]]
* RedOniBlueOni: Subverted. When the characters are introduced, brash, abrasive and opinionated Demetri is the Red Oni, to quiet, timid Eli's Blue Oni. However, these roles are reversed after Eli joins Cobra Kai and takes on the "Hawk" persona, with Demetri as the rational and intellectual Blue to Hawk's reckless, passionate and brutish Red.
* SadClown: Demetri's facetiousness and acerbic sense of humor is often a way to mask his inner depression and insecurity and for most of Season 2, he whines that he'll never a good fighter compared to the other members of Miyagi-Do.
* SavvyGuyEnergeticGirl: Demetri is the savvy guy and Moon is the energetic girl. As soon as Demetri and Moon become close friends, Demetri is the snarky and rational cynic who's personality completely contrasts with Moon being a naive and ditzy optimist.
* SensitiveGuyAndManlyMan: Sensitive guy Demetri is the wimpy nerd while manly man Hawk is the tough guy.
* SesquipedalianLoquaciousness: Demetri occasionally peppers his speech with SAT-level vocabulary.
* ShadowArchetype: Hawk grows to view him as one, seeing his more pacifistic and meek tendencies as an embodiment of all the "nerd shit" he wants to reject. Demetri doesn't seem to realize this at first, viewing it as his friend just acting like a jerk until Hawk goes so far as to try and violently assault him for a Yelp review and the two grow to be enemies.
* SinisterScythe: Well there's hardly anything "sinister" about Demetri, he puts on a particularly good showing in the All-Valley skills competition with a pair of kamas.
* TheSlacker: Demetri isn't one for physical work, and quits the Cobra Kai after only one lesson. That said, he is very diligent when it come to his academic work. On the other hand, despite his complaining, he sticks solidly with Miyagi-Do, [[AvertedTrope and it paid off in a big way during the school brawl.]]
* SlapSlapKiss: Up to Kyler drawing a penis on Demetri's cast, Yasmine continued to treat Demetri with contempt, with Demetri only occasionally teasing her back. One thing obviously lead to another, and now Miguel and Sam have found them making out with each other.
* TheSmartGuy: His dedication to physical training is inversely proportional to his dedication to his academic studies and is the most inclined to use his head in a fight. He is also quick to see the purpose of Miyagi-Do's [[WaxOnWaxOff training methods]] that even Robby didn't recognize at first.
* SophisticatedAsHell: When Eagle Fang students are about to leave Sam's attempt to get them to ally with Miyagi-Do, Demetri [[TheReasonYouSuckSpeech stands up and calls them pussies for letting Cobra Kai push them around, saying it makes everyone assholes for tolerating such assholes]]. He then apologizes for using "asshole" so much, as he prefers to be more eloquent than that.
* TheSpock: To Miguel's [[TheKirk Kirk]] and Hawk's [[TheMcCoy McCoy]]. He could not see the reasons behind karate when you can call the police and saw Cobra Kai's unnecessary belligerent teaching as bad. It takes a more compassionate teacher like Daniel to teach him how to defend himself and gain confidence. He is also focused on orthodox defense compared to the two others.
* StealingTheCredit: To Hawk's annoyance, Demetri piggybacks off of Cobra Kai's victory at the All-Valley Tournament when two girls pass by him and ask him about Cobra Kai after noticing his towel bearing the logo of the dojo.
* StepfordSnarker: Often uses sarcasm as a way to shield his insecurities, cynicism and neuroses.
* StoneWall: Downplayed. He's a defensive fighter who focuses on blocking and intercepting attacks. Normally applicable to those built like Aisha or Chris, his training enabled him to deal with Hawk's persistent attacks and eventually capitalize on his sloppiness.
* StrongerThanTheyLook: When properly motivated (i.e. fearing for his safety), Demetri is capable of performing some praiseworthy physical feats. During the school brawl, when cornered by a bloodthirsty Hawk, he is able to skillfully block Hawk's wild barrage of punches and then sends him flying back into a trophy cabinet with a single inside crescent kick.
* TeethClenchedTeamwork: This trope ensues when Daniel grows frustrated with Chris and Demetri bickering, and sets the two of them to move a heavy stone as a team. At first, they spend as much time insulting each other as they do actually trying to lift the stone, but once they finish the job they form a solid friendship.
* TellMeHowYouFight: Season 2 on, he combines CowardlyLion and StoneWall. Being as weak as he is, he needs to play a thinking man's game. When faced with a confrontation, his first response is to run for assistance, run and hide afterward, and engage only when he has no room left to run. Then he takes a page out of Aisha's book: turtling and soaking attacks until his opponent lapses, upon which he settles the matter with one or two shots.
* TokenGoodTeammate: [[DownplayedTrope While he's still snarky and mouths off to people]], Demetri still counts as one to the Cobra Kai students after they start succumbing to HeWhoFightsMonsters. However, in Season 2, he turns against them completely after Hawk reacts poorly to his bad Yelp review for Cobra Kai.
* TookALevelInBadass: Learning karate has made him this obviously but he's still considered a newbie at the end of Season 2 since he stil greatly focused on defense.
** His karate skills improve dramatically between the end of Season 2 and Season 3 and he's able to take on several Cobra Kai members head on without relying entirely on defense. During the arcade fight, he's the last Miyagi-do fighter to go down and it's primarily due to being outnumbered. By the end of Season 3, it's safe to say that next to Sam, he is the best student in Miyagi-Do (and the best in applying Miyagi-Do's philosophy of "fighting only when needed").
** In season 4 he makes it to the top four in the males competition of the All Valley Tournament. The other 3 Miguel, Eli, and Robby the latter of whom delivers his defeat.
* TookALevelInKindness: In seasons 1 and 2, he is, to put it quite bluntly... a pessimistic, condescending know-it-all who hates the fact that Hawk changed his persona in order to become more confident (albeit becoming a gigantic {{Jerkass}} in the process) and has no problem being a massive coward when it suits him. Come Season 3 though, he's ''far'' more confident in himself. While it does make him a little brash still, this actually serves to make him far easier to be around as he's more relaxed and less neurotic. He's the one helping to lead the charge at the end of the season to [[spoiler:merge the two dojos]] and he doesn't try to turn it into an AllTakeAndNoGive situation like he's accustomed to. In fact, it's his swagger that allows it to really work. That's right friends, somewhere along the way Demetri actually became cool enough to even have [[spoiler:Yasmine be potentially interested in being his girlfriend]].
* WaxOnWaxOff: Demetri figures out the purpose of the training method, but he whines the whole time, gets a splinter while sanding floors, and finally has to be walked through the moves slowly while Daniel explains them.
* WeakButSkilled: Demetri's scrawny, lanky and probably the weakest Miyagi-Do fighter but eventually with his long speedy legs, he's quick to defend himself and fight back against enemies.
* WeUsedToBeFriends: His friendship with Eli goes out the window completely following the latter's commitment to Cobra Kai and its teachings. Demetri finally exploits this after Hawk's rejection and bullying of him goes too far at Moon's party, promptly proceeding to tell all the guests embarrassing things about Eli. Despite this, Demetri still seems sorry they aren't friends anymore, even when he kicks Hawk into a trophy case at the end of Season 2.
-->'''Demetri:''' [[ApologeticAttacker No hard feelings.]]
** [[spoiler:Despite things in Season 3 escalating to the point where he was willing to break his arm, Hawk ultimately sees the error of his ways, and passes up the chance to take down Demetri by attacking his captors instead, apologizing to him afterwards. Demetri seems more than happy to take up his offer of dealing with the remaining Cobra Kai students. By the end, they're finally back to being the ThreeAmigos with Miguel.]]
-->'''[[spoiler:Eli/Hawk:]]''' [[spoiler:Look, man, I'm sorry. For all of it. [[BashBrothers Do you wanna help me win this thing?]]]]
-->'''Demetri:''' [[spoiler:[[HellYesMoment ... Yeah.]]]]
* TheWorfEffect:
** Inverted. Though Hawk is a top student of Cobra Kai, come their fight during the Cobra Kai/Miyagi-Do school brawl, the pacifistic and amateur Demetri persistently endures Hawk's relentless assaults and wins when he kicks his opponent into a trophy cabinet. [[GlassCannon This emphasizes how poor Hawk's defense is compared to his attack.]]
** Unfortunately played straight in the Golf n' Stuff fight in which Hawk, now able to utilize Kreese's "fighting smart" technique, [[CurbStompBattle pins down Demetri in a matter of minutes]], to the point where he can do nothing but [[AintTooProudToBeg beg for mercy]] as Hawk breaks his arm.
** After making it to the final four of the All Valley in Season 4, he gets demolished 3-0 by Robby in the semi-final to demonstrate how formidable of an opponent he will be for [[spoiler:Hawk]] in the final.
* UndyingLoyalty: As soon as he started training with Daniel in season 2, he has become very loyal to Miyagi-Do even after he had his arm broken in season 3. He was a devoted friend to Eli in season 1 until Eli became Hawk and began to bully Demetri but at least Demetri was able to forgive Eli after he apologized for everything he has done.
* UnwittingInstigatorOfDoom: In season 2, Demetri's negative Yelp review in response to Kreese assaulting him is what starts the chain of events that culminated in the school brawl, as in response to it, Hawk brings a gang to assault Demetri at the mall, and when he's defeated by Sam and Robby, he is encouraged by Kreese to vandalize Miyagi-Do in response. Robby subsequently lies about the medal when Miguel returns it to Sam, which leads to her kissing Miguel while drunk when she finds out the truth from Aisha, which is seen by Tory, who decides to respond by picking a fight at school.
* WhatDoesSheSeeInHim: Miguel, Sam, and Hawk are all perplexed as to how the geeky Demetri managed to land [[spoiler:Yasmine]] as his girlfriend. Even Demetri admits he has no idea how he did it.
* YouWouldntShootMe: When Hawk accosts Demetri at the mall and threatens to take him down, Demetri says, "You'd actually hurt me?" when he realizes that he's not backing down from his word.
[[/folder]]
----
[[Characters/CobraKaiDanielLaRusso Daniel [=LaRusso=]]] | [[Characters/CobraKaiJohnnyLawrence Johnny Lawrence]] | [[Characters/CobraKaiJohnKreese John Kreese]] | [[Characters/CobraKaiRobbyKeene Robby Keene]] | [[Characters/CobraKaiEliMoskowitz Eli "Hawk" Moskowitz]] | [[Characters/CobraKaiToryNichols Tory Nichols]] | ''' Demetri Alexopoulos'''\\
'''Dojos and Others'''\\
[[Characters/CobraKaiCobraKaiAndAssociates Cobra Kai and Associates]] | [[Characters/CobraKaiEagleFangAndAssociates Eagle Fang and Associates]] | [[Characters/CobraKaiMiyagiDoAndAssociates Miyagi-Do and Associates]] | [[Characters/CobraKaiOtherCharacters Other Characters]]-]]]]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/ck_s4_demetri.png]]
[[caption-width-right:350: ''"I'm at peace with my depression. Last thing I need to be is suicidal."'']]
->'''Played by:''' Gianni [=DeCenzo=]
->'''Appearances:''' ''Series/CobraKai''
->''"My whole life I've been, let's just say... less than popular. But at least I had a few friends. And then Cobra Kai comes to town, and the next thing I know, my friends are taking karate and becoming alpha jerks. I'm literally being threatened by my best friend. I just wanted to show I could fight back."''
A sarcastic and awkward nerd who Miguel befriends during his first day of school, Demetri is another victim of Kyler's bullying. He attends only one lesson at the Cobra Kai's dojo before quitting, but remains a part of the Cobra Kai clique until going over to Miyagi-Do to learn karate instead.
----
[[foldercontrol]]
[[folder:A-J]]
* AccentuateTheNegative: Demetri is a negative person in general and complains a lot, but Daniel later points out to him that it's a good trait of his, because that means he is always prepared for the worst. Which plays into his fighting style as he's fairly good at [[StoneWall predicting and intercepting attacks]]
* AintTooProudToBeg: When Hawk is about to break Demetri's arm, Demetri sincerely begs him not to do it. Sadly, he ends up with a proximal radius fracture after Hawk breaks it.
* AffectionateNickname: Chris starts calling him "Meet" (possibly 'Meat') when they become friends.
* AnalogyBackfire: A RunningGag through his time at Miyagi-Do. Whenever he makes a comparison to a specific action on ''Series/GameOfThrones,'' Daniel neatly counters it.
* ApologeticAttacker: When Hawk fights him in the finale of Season 2, Demetri manages to defend himself and whispers, "No hard feelings", before throwing him against the school's trophy cabinet and kicking him right into it. Afterwards, he apologizes again.
* AwesomenessByAnalysis: Daniel calls Demetri "the most neurotic person I have ever met," then states that this can be turned into a positive: Demetri notices things, sees tiny details everyone else misses, and this can be applied to give hyperaware insight into what an opponent is about to do. When Demetri finally commits to actually learning (and defending himself) with karate, he proves capable of reading his opponents. Daniel compares it to "[[ComicBook/SpiderMan Spidey-Sense]]" (which Demetri immediately corrects to "''Spider''-Sense").
* BadassPacifist: Demetri is one of few students to not instigate a fight against an enemy because of his passionate hatred for violence and he only fights back when he feels attacked or provoked which means that he's also a MartialPacifist as well.
* BadassBookworm: Downplayed initially. He's still a beginner and an insecure pacifist at the end of Season 2, but he knows enough to fend off Hawk's attacks and send him into a trophy case. He truly becomes this in Season 3 when his newfound confidence helps his skills improve dramatically and he fights Cobra Kai more directly.
* BadLiar: He's a terrible liar. His attempt to act all "buddy-buddy" with Hawk when Counselor Blatt catches his Miyagi-Do group and Hawk's Cobra Kai group staring each other down clearly doesn't convince her, nor does his attempts to claim not to know Sam when she lashes out at Counselor Blatt after the soccer game. Later, he awkwardly tries to claim they're doing "study group" when Amanda catches Sam training the Miyagi-Dos in secret. When Sam and Miguel catch him making out with Yasmine, he awkwardly tries to deny his attraction to Yasmine but gives up any attempt at it once she's out of sight.
* BashBrothers: [[spoiler:After he and Hawk reconcile, the two prove to be a highly effective fighting team as they dispatch several Cobras with their combined skills.]]
* BeautyIsBest: Demetri knows exactly what kind of AlphaBitch that Yasmine is in Season 1 and remains attracted to her, anyway. Although [[spoiler:being a slightly perverted DoggedNiceGuy to her seems to be paying off as of Season 3, the trope gets subverted since Demetri also seems to finally value for her for something other than her looks]].
-->'''Demetri:''' I don't care if Yasmine is the meanest girl in school, I'd kill both of you just to get her to spit in my face.
* BigBrotherInstinct: While everyone else is defending themselves at in the Season 3 brawl at Sam’s house, Demetri pulling double duty also protecting Nathaniel and Bert from the much larger Cobra Kai assailants. He does pretty well at first.
* BirdsOfAFeather: [[spoiler:Yasmine]] and Demetri might seem like an OppositesAttract type of kind of couple, but honestly they are both snarky, mouthy and condescending teens that have suffered from public humiliation so they manage to bond over that and see the good in each other.
* BookSmart: Demetri's an academic and studious nerd and despite his pessimistic nature, he does have his ambitions and when he gets detention for the first time, he's only focused on how it'll hurt his permanent record.
-->'''Demetri:''' I gotta do well on these so I do well on the actual test so I get into a good college, which will lead to a good internship, then a high-paying job, and then, after a couple promotions, I should have enough confidence to get a super-hot girl. You got the karate thing. I gotta play the long game.
* BrainyBrunet: Demetri is a dark haired teen and is TheSmartGuy of Miyagi-Do.
* BromanticFoil: To Miguel. His complete lack of any social skills and hilariously inept attempts at flirting contrast Miguel's growing confidence and ability to develop a relationship with Sam. When he and Yasmine form a BetaCouple, their SlapSlapKiss dynamic contrasts [[OfficialCouple Miguel and Sam's]] more affectionate interactions.
* BullyAndWimpPairing: As soon as Eli became Hawk, he becomes Demetri's worst enemy after he writes a bad review of the Cobra Kai dojo which angers Hawk and for the most part tries to make Demetri's life miserable but luckily they're able to reconcile, set aside their differences and fight as a team.
* BullyingADragon: He may be a wimpy, neurotic and insecure whiner but he simply can't help mouthing off when Cobra Kai are involved.
** His bragging that Johnny works for the students because they pay him earns him a swift asskicking.
** His telling Kreese his cobra tattoo (a memento of fellowship with his war buddies) was anatomically incorrect was equally dumb (though more InnocentlyInsensitive than deliberate provocation).
** And his lengthy speech humiliating Hawk, [[spoiler:who'd kicked his ass once already by this point and was only holding back after a telling-off from Johnny]], leads to [[spoiler:Hawk going after him during the school brawl and nearly kicking his face in]].
* ButtMonkey: Almost all of his training at Miyagi-Do leads to him getting beat up. Even in Season 3, he gets cruelly mocked by Kyler after Hawk breaks his arm.
* ClassicalAntiHero: Demetri's sarcasm is a mask for his insecurities, cowardice and neuroticism, but in Season 2, after joining Miyagi-Do, he's able to defend himself when threatened by opposing aggressors like Hawk.
* TheComicallySerious: Subverted. Demetri may be a facetious, awkward and sarcastic jokester while he's too insecure to put in effort for karate, but he's also very rational and the most studious of the members of Miyagi-Do.
* CoolLoser: He seems to have become this by Season 3. While he is still regularly picked on and laughed at by other students, most of them still seem to remember Demetri's involvement in the school fight (i.e. beating Hawk) and recognized that he was a legitimate karateka. And Demetri, with his newfound confidence, is seen more often winning others over with his passionate pursuit of academics and dorky interests.
* CowardlyLion: His defining trait. He joins Miyagi-Do because he doesn't want to be perceived as a pussy. While it takes him forever and in a year, he sticks solidly with his training, and (faced with an OutsideContextProblem where he tries to get a teacher's help) it pays off in no small way during the school brawl when he disposes of Hawk with one good kick.
* CurbStompCushion: He doesn't score a single point against Robby when they face off at the All-Valley in Season 4 but still gives a pretty good showing and manages a rather impressive takedown on his opponent.
* TheCynic: Demetri is pessimistic and always finds something to complain about.
* ADayInTheLimelight: Before "All In", Demetri functions pretty low on the recurring cast of characters, always a tagalong but very ineffective at everything. This is the first episode that spends time focusing on him, his response to the Miyagi-Do training and his feelings on what's happened to Miguel and Eli/Hawk.
* DeadpanSnarker: A good chunk of his EstablishingCharacterMoment is him making snarky quips. It's eventually {{Deconstructed|Trope}} in Season 2; a lot of the things Demetri [[JerkassHasAPoint brings up are accurate and sensible]], but his deliveries are so snide and condescending that people shut him down out of not entirely undeserved spite (or in Kreese's case, sock him in the nose).
* DefectorFromDecadence: Demetri joins Miyagi-Do in Season 2 after Kreese punches his face in when he goes to sign up for lessons at Cobra Kai again.
* DitzyGenius: Demetri may be the smartest teenager in the show but he's also the most socially oblivious and quite often he doesn't know when to shut up.
* TheDogBitesBack: After Hawk rebukes Demetri's sincere attempt at helping him move on from Moon (which included Hawk spilling his drink all on top of Demetri and spitefully chides him for still being a "pussy"), Demetri proceeds to humiliate Hawk in front of the whole party by going on a lengthy diatribe of embarrassing secrets and trivia about Hawk that he learned when they were still friends. Come their confrontation during the school brawl, Demetri endures Hawk's relentless assaults and wins when he kicks his opponent into a trophy cabinet. Once everyone's suspensions are over, Demetri has gained a lot of social standing at Hawk's expense.
* DorkKnight: Demetri is one of the most noble characters in the show and he's the nerdiest of all the teens.
* EasilyForgiven: Despite being continuously antagonized by Hawk throughout Season 2 and 3, Demetri still seems to want him to return to being his friend. [[spoiler:Even after Hawk breaks his arm during the laser tag fight, Demetri is neither angry or vengeful and persists on getting Eli back. This cumulates to the brawl at the [=LaRusso=] house where Hawk saves Demetri and the two amicably work together to neutralize the rest of the Cobra Kai fighters.]]
* TheEeyore: Demetri tends to expect the worst to happen and generally acts pessimistic even when things are going good. Daniel flat out tells Demetri he's the most neurotic person he's ever met.
* EntitledBastard: When Miguel tells him to stop mouthing off to Johnny during the Cobra Kai lesson, he refuses and says Johnny can't do anything about it believing that, as the kids are paying him, he works for them. Naturally, this earns him a flip throw from Johnny. Saying something like that in ''any'' dojo will likely get you kicked out, as a very important aspect of martial arts is ''respect'', whether it be towards the dojo, sensei, or students.
* ExtravertedNerd: Being in Miyagi-Do has allowed Demetri to shed the burden of being a social outcast. Gaining some friends as well (including Sam, Chris, Nathaniel) as a way to defend himself from bullies if he needs to leads him to become one of these by Season 3.
* FatalFlaw: Self-confidence, or moreso, the lack of it. He spends the better part of the first two seasons constantly complaining about the things he can't do, and generally tries to drag down his friends to his level. Once he takes out Hawk in the Season 2 finale, he gains some confidence and starts quickly excelling more at Karate and catching Yasmine's eye. By Season 4 he's at his most confident, but he still doesn't think too highly of himself even calling himself a Side Character compared to Miguel or Eli being TheAce. Even so, he has a highly impressive performance in the Skills Competition and makes it to the semifinals of the All-Valley. Demetris is highly competent when he puts his mind through something, showing he can be an effective leader, an excellent fighter and a great catch for a girl but the only thing that holds him back is his continued belief in being below others. The show subtly implies that if Demetri were to ever get over these last mental blocks that he'd be one of the best fighters in the entire cast with his reach and predictive abilities being stand out attributes of his.
* TheFinickyOne: Subverted. While Demetri clearly has a quirky sense of humor and wittiness, he's a ButtMonkey who hardly lets go of his neurotic nature and is often the voice of reason when he's with his friends.
* FireForgedFriends: With Chris. He’s rightfully the least trusting of the former Cobra Kai students when they join Miyagi Do. But through working together to help clean up the Dojo after Hawk vandalized it, they’re able to overcome their differences. Exemplified when Hawk and co. try to attack Demetri at a party after the latter embarrasses the former and this time Chris comes to his defense in contrast to when he followed Hawk in his assault on Demetri at the mall. They’re also seen briefly agreeing to get an authority teacher involved early in the school brawl rather than escalating it further. By Season 3, both Chris and Demetri are rarely seen without each other, whether they're training, hanging out, or preparing for a fight.
* FirstNameBasis: Demetri continues to refer to Hawk as 'Eli' well after his transformation, both to spite his former friend and to show his dispproval of what Eli had [[HeWhoFightsMonsters allowed himself to become]].
* {{Foil}}: To Hawk in general. The two start out as best friends, with Demetri being a mouthy InsufferableGenius while Eli is a ShrinkingViolet who prefers to let Demetri do all the talking. Demetri discourages Miguel's attempts to stand up to Kyler, feeling he's better off keeping his head down and avoiding bullies, while Eli is impressed by his bravery. When the two join Cobra Kai, Demetri is put off by Johnny's TrainingFromHell and quits, while Eli embraces it and takes on the "Hawk" persona. Demetri is ProudToBeAGeek, while Hawk tries to bury his nerdy past, and starts to view Demetri as [[ShadowArchetype the embodiment of everything he hates about himself]]. In terms of their fighting style, Hawk focuses on attack, while Demetri is almost purely defensive.
* FragileSpeedster: If Daniel is to be believed, Demetri's speed (when pressured) can match some of the best Olympic athletes. [[note]]All-time 100 yard dash records for men are just under ten seconds.[[/note]]
-->'''Daniel:''' I heard you ran the hundred yard dash in under ''ten seconds.''
* GenreSavvy: Being BookSmart and a huge geek, Demetri immediately recognizes the purpose of Daniel's WaxOnWaxOff training. It doesn't make him any less happy about it, though.
* GiveGeeksAChance: LovableNerd Demetri and [[spoiler:former AlphaBitch Yasmine made out in the hallway at school in Season 3 after she became more sympathetic towards him after being humbled in the first season]].
* GoodCounterpart: To Eli/Hawk in Season 2 and 3.
* GoodIsNotNice: Note how most of the tropes here pertain to his negative qualities. In Season 1, Demetri never seeks any self improvement and encourages Eli and Miguel to do the same. He has no problem bringing down other people he deems lower than him no matter how bad an idea it is but in Season 2, while he's still whiny, insensitive and difficult to get along with, he's still a good person in his own way and is often against starting fights with other people.
* TheHeart: Yes believe it or not, the MouthyKid who dismisses others as an act of self-defense becoming this for the kids. It’s his speech that gets the kids from Eagle Fang to cooperate with Miyagi-Do when Miguel and Sam’s attempts fail and it’s seeing him in distress that’s the final catalyst in turning Hawk to their side. In Season 4, he convinces Hawk to return to Miyagi-Do by giving him a pep-talk and reminding him of how important their friendship is.
* HeroicSelfDeprecation: While he may be whiny, he's quick to point out how pathetically weak and skinny he is. In Season 4, he admits that he has no idea why Yasmine is attracted to him and that he has no chance of defeating Robby or Miguel at the tournament.
* HypocriticalHumor:
** Calling Eli "Lip" is totally uncalled for and a Nazi move. Calling Sam the "blowjob girl" is fair game.
** When he attempts to join Cobra Kai for the second time, he tells Kreese that he has a lot of personal space issues that the other students are just going to have to deal with... then notices Kreese's arm tattoo and starts touching it. As you could predict, Kreese punches him in the face.
* IJustWantToBeBadass: After Demetri continues whining during training, Daniel asks him why he decided to join Miyagi-Do. Demetri says it's because all of his friends are training in martial arts and he felt pressured to learn just so he could show them that he wasn't weak. But his real motivation is...
* IJustWantToHaveFriends: The only friends he has (Miguel and Eli) are up to their necks in Cobra Kai, and Demetri has tried and failed twice to adapt to their new social activity. Finding Cobra Kai completely unsuited to him, Demetri came to Miyagi-Do, hoping less to learn badass martial arts and more to find new friends to hang out with.
* IKnowYoureInThereSomewhereFight: Despite their falling out in Season 2, Demetri continuously attempts to reach out to [[FirstNameBasis Eli]] even as Hawk repeatedly snubs and bullies him. [[spoiler:Demetri finally succeeds at the end of Season 3 during the house brawl.]]
* ImNotAfraidOfYou: When Hawk confronts him in the mall in Season 2, Demetri isn't intimidated and calls him by his real name to make a point. ''Then'' Hawk kicks him...
* InsistentTerminology: Demetri will only refer to Hawk as Eli. At first, it's because they're lifelong friends and he's confused by the latter's new look and attitude. Later on, it's to remind the now bully that he remembers how his life was before Cobra Kai.
* InsufferableGenius: Demetri is a very intelligent person but he's obnoxious due to how condescending, impudent and brash he is. Demetri is rational and perceptive, and his observations are often spot-on, but his only two modes of communication are whining and snarking. This leads to people shutting him down-or-up at every opportunity, even when they know he's right, just because he comes across as so utterly insufferable.
* ItRunsInTheFamily: During Moon's party, Demetri mentions his family's spare air mattress, which his mother dubbed [[spoiler:"Eli's waterbed" due to the other boy's chronic bedwetting]]. If Demetri is telling the truth, he may have picked up some of his InnocentlyInsensitive tendencies from her.
* JerkassHasAPoint: While he is clearly not cut out for Cobra Kai's intense training methods and should have known better than to keep contradicting Johnny in the middle of class, Demetri is still correct that verbally and physically abusing new clients isn't exactly a good business practice. This leads Miguel to give Johnny a dressing-down, which in turn causes Johnny to change his approach and focus more on the DareToBeBadass aspect of the Cobra Kai philosophy. This eventually becomes {{Deconstructed|Trope}}, in that even though Demetri's ''correct'' on what he says, [[InsufferableGenius he's such a snide and condescending know-it-all that even people who know he's right will ignore or shut him up just out of spite]].
* JerkWithAHeartOfGold: He's certainly an insensitive, condescending and dismissive person who whines about everything and often mouths off karate teachers but he's always fiercely devoted to his friends, especially when he's quick to forgive and befriend Hawk after being being bullied by him for so long.
[[/folder]]
[[folder:L-Y]]
* TheLancer: [[spoiler:With Daniel being preoccupied with other things during the season and Robby in juvie, he becomes the de-facto second-in-command for Miyagi-do as Sam takes up the leadership position. Notably, he's the first one to agree to her and Miguel's proposal of combining forces with Eagle Fang to take down the corrupted Cobra Kai.]]
* LikeBrotherAndSister: Sam and Demetri have a close friendship where Sam is like a protective older sister and is always the one to stand up for him.
* LovableNerd: Demetri is definitely a flawed person, but he's also very sympathetic, funny, and a genuinely noble friend who TookALevelInBadass to even be able to fight off bullies and bring out the best in [[spoiler:Yasmine]].
* LovableCoward: At first, Demetri was a comically pathetic coward that would rather run away from his problems, instead of trying to defend himself but thanks to Daniel guiding him, he manages to become a lot more braver and be less insecure about himself. Still, he'll readily admit that he prefers not to get into a fight if he can help it.
* MartialPacifist: Despite training at Miyagi-Do, when he's targeted by Hawk during the school brawl, his first instinct [[CowardlyLion is to run]] rather than fight. When cornered, he focuses on [[StoneWall blocking]] rather than attacking. It's only after Hawk [[TheBerserker refuses to let up]] that Demetri [[StrongerThanTheyLook takes him down with a kick through a glass trophy case.]]
* MasculineGirlFeminineBoy: The feminine boy to Sam's masculine girl. Mainly since Sam is a more trained and skilled fighter than Demetri is, more aggressive than him and is often one to look after him.
* MinoredInAsskicking: While he is loyal to Miyagi-Do and takes its philosophy and teachings to heart, Demetri's biggest passions will always be with his nerdy interests and geeky cultural fandoms.
* MouthyKid: His penchant for snarking can cause him to veer into this, especially during his one lesson at Cobra Kai. Johnny does not take kindly to his sassy attitude. ''At all.'' He even remembers him as "that mouthy one" when Miguel tries to warn him about Kreese's increasingly violent behavior.
-->'''Demetri:'''I say a lot of things which tends to be a polarizing attribute mine.
* MoralityPet:
** He becomes this to Yasmine in Season 3, as she takes pity on him when she sees him being bullied by Kyler and proves that she's [[TookALevelInKindness Taken a Level in Kindness]] by fixing the embrassing drawing that Kyler put on his cast.
** [[spoiler:Hawk makes a HeelFaceTurn in the Season 3 finale when he sees Demetri in trouble during the house brawl and decides to help him instead of breaking his arm again.]]
* NervousWreck: Demetri is by nature a pretty neurotic person and he whines about the minimal things constantly.
-->'''Daniel:''' ''[to Demetri]'' You are the most neurotic person that I know.
* NiceGuy: Know-it-all tendencies aside, Demetri is a good person who's super loyal to his friends and was able to forgive Eli for treating him like crap and turning against him. He's easily the least likely to strike hard against another person unless he needs to defend himself and even apologizes to Hawk for kicking him into the school's trophy case.
* NiceJobBreakingItHero: The one time Demetri goes out of his way to antagonize Hawk in retribution, by telling embarrassing stories at a party, ultimately ends up being the powder keg to egg on the rest of Cobra Kai during the brawl.
* NoFullNameGiven: Until Season 3, Demetri was the only main cast member whose last name had never been revealed, the only clue the audience has being that he's grouped with Miguel as part of the "Last Names A-G" cohort for their SAT practice test. [[spoiler:In the season 4 tournament, the announcer finally blurts out his name as "Alexopoulos".]]
* NoSenseOfPersonalSpace:
** He starts touching Kreese's arm without an invitation to examine his snake tattoo, just after explaining that [[HypocriticalHumor he needs other students to respect his boundaries]] while he's taking karate lessons.
** When the Miyagi-Do students are sheltering under a tree from a heatwave, he wipes the sweat on his forehead off on Sam's shoulder, which she is visibly disgusted by.
* NoSocialSkills: A lot of Demetri's awkwardness stems from his lack of social awareness. He doesn't seem to realize just how snide and condescending his lecturing can come across and he's absolutely hopeless when it comes to flirting with girls. He also decides to bring ''TabletopGame/TrivialPursuit'' to Moon's party, clearly missing the point that most of the teens are going to be drinking.
* NobleMaleRoguishMale: The noble male to Hawk's roguish male as Hawk became more aggressive and bullies others for petty reasons while Demetri preferred to be more worldly and only fights back to defend himself.
* NonActionGuy: He was pretty much Daniel's weakest student and he was unable to physically defend himself against bullies. This is exemplified in Season 2, when he was being attacked by the Cobra Kai in the mall; while Robby and Sam fought back against the attackers in order to save him, Demetri was mostly just standing around avoiding getting hit. Luckily, he was able to improve on his fighting skills, especially after his defeat of Hawk in the school brawl.
* NonActionSnarker: Demetri is pretty much Daniel's snarkiest student and is the most reluctant to fight off his enemies unless it seems necessary.
* OddFriendship:
** He and Robby really don't have anything in common, but Robby is happy to hang out with him outside of Miyagi-do lessons and defend him from getting attacked by Cobra Kai nonetheless... at least until Robby himself joins Cobra Kai. By Season 4, neither recall their previous friendship, despite Demetri being one of the very few characters who didn't wrong Robby in any way.
** Moon is a bubbly GirlyGirl and Demetri is a cynical {{Nerd}} and in Season 2, they two actually have a platonic relationship with each other and not only is she humored by Demetri, she also breaks up with Hawk when she found that he bullied him over a Yelp review. And in Season 3, (along with Yasmine) she takes genuine interest in Demetri's Lego volcano and also hates to see it get destroyed because of Hawk.
* OffingTheMouth: [[DownplayedTrope While Johnny only bodyslams him for talking out of turn]], the argument can easily be made that Demetri brought Johnny's wrath upon himself. Later episodes shows Demetri's mouth get him into trouble more than once.
* OnlySaneMan:
** The only one in Miguel’s group to consistently display common sense, particularly during Season 1. He tries in vain to rein them in when they start turning into jackasses. The tournament proves him right.
** In Season 2, Demetri is the one student of both schools who actively tries to avoid hostile confrontations. When the brawl between the two schools breaks out, Demetri's response is to run and get a teacher to try and diffuse the fight.
** In Season 3, while he does follow Sam as she leads Miyagi-Do, Demetri is the only one to question if their actions are necessary.
** In Season 4, he's well aware that despite Daniel's optimism and encouragement, Miyagi-do is truly at a disadvantage with the All Valley's new male combat division format. Thus, he convinces [[spoiler:Eli]] to join up.
* OOCIsSeriousBusiness: When it looks like negotiations between Miyagi-do and Eagle Fang are going south, Demetri suddenly raises his voice and starts dropping curse words like crazy during his RousingSpeech (see below). For an awkward kid who takes pride in his eloquent speaking, to hear him speak so loud and coarsely, everyone present was taken aback, and after his speech he even apologized for the language.
--> '''Demetri''': "I'm sorry about all the 'assholes'. I usually take pride in my grandiloquence, but it's an emotional time."
* OvershadowedByAwesome: Demetri has made incredible progress in his karate skills by the time of Season 4, and puts in a very impressive performance to reach the All Valley semifinals. Unfortunately, he's not on the level of [[TheAce the other three semi finalists]], namely Miguel, who Demetri explicitly acknowledges has never been beaten in a fair fight, Hawk, whom he considers the Franchise/{{Batman}} to his Alfred, and Robby, whom he treats as TheDreaded. He ends up being defeated by Robby in a 3-0 shutout, though Daniel is still [[SoProudOfYou proud of him]] for how far he has come.
* PluckyComicRelief: While he's meant to be the rational intellectual of the the group of Miyagi-Do students, he provides a lot of humor to the show due to how much of a nerdy, awkward goofball he is.
* PopCulturedBadass: Not only does he know how to kick butt thanks to Daniel's training, he never loses his nerdy habit of frequently using pop-culture references, like ''Film/HarryPotter'', ''Series/GameOfThrones'', ''Franchise/TeenageMutantNinjaTurtles'' and ''Series/DoctorWho''.
* ProudToBeANerd: Unlike Eli, Demetri embraces his nerdiness and wished for Eli to be binary brothers with him again but sadly for him, Eli rejects it and sticks to be being an aggressive Cobra Kai fighter. [[spoiler:At least until Season 3.]]
* RedOniBlueOni: Subverted. When the characters are introduced, brash, abrasive and opinionated Demetri is the Red Oni, to quiet, timid Eli's Blue Oni. However, these roles are reversed after Eli joins Cobra Kai and takes on the "Hawk" persona, with Demetri as the rational and intellectual Blue to Hawk's reckless, passionate and brutish Red.
* SadClown: Demetri's facetiousness and acerbic sense of humor is often a way to mask his inner depression and insecurity and for most of Season 2, he whines that he'll never a good fighter compared to the other members of Miyagi-Do.
* SavvyGuyEnergeticGirl: Demetri is the savvy guy and Moon is the energetic girl. As soon as Demetri and Moon become close friends, Demetri is the snarky and rational cynic who's personality completely contrasts with Moon being a naive and ditzy optimist.
* SensitiveGuyAndManlyMan: Sensitive guy Demetri is the wimpy nerd while manly man Hawk is the tough guy.
* SesquipedalianLoquaciousness: Demetri occasionally peppers his speech with SAT-level vocabulary.
* ShadowArchetype: Hawk grows to view him as one, seeing his more pacifistic and meek tendencies as an embodiment of all the "nerd shit" he wants to reject. Demetri doesn't seem to realize this at first, viewing it as his friend just acting like a jerk until Hawk goes so far as to try and violently assault him for a Yelp review and the two grow to be enemies.
* SinisterScythe: Well there's hardly anything "sinister" about Demetri, he puts on a particularly good showing in the All-Valley skills competition with a pair of kamas.
* TheSlacker: Demetri isn't one for physical work, and quits the Cobra Kai after only one lesson. That said, he is very diligent when it come to his academic work. On the other hand, despite his complaining, he sticks solidly with Miyagi-Do, [[AvertedTrope and it paid off in a big way during the school brawl.]]
* SlapSlapKiss: Up to Kyler drawing a penis on Demetri's cast, Yasmine continued to treat Demetri with contempt, with Demetri only occasionally teasing her back. One thing obviously lead to another, and now Miguel and Sam have found them making out with each other.
* TheSmartGuy: His dedication to physical training is inversely proportional to his dedication to his academic studies and is the most inclined to use his head in a fight. He is also quick to see the purpose of Miyagi-Do's [[WaxOnWaxOff training methods]] that even Robby didn't recognize at first.
* SophisticatedAsHell: When Eagle Fang students are about to leave Sam's attempt to get them to ally with Miyagi-Do, Demetri [[TheReasonYouSuckSpeech stands up and calls them pussies for letting Cobra Kai push them around, saying it makes everyone assholes for tolerating such assholes]]. He then apologizes for using "asshole" so much, as he prefers to be more eloquent than that.
* TheSpock: To Miguel's [[TheKirk Kirk]] and Hawk's [[TheMcCoy McCoy]]. He could not see the reasons behind karate when you can call the police and saw Cobra Kai's unnecessary belligerent teaching as bad. It takes a more compassionate teacher like Daniel to teach him how to defend himself and gain confidence. He is also focused on orthodox defense compared to the two others.
* StealingTheCredit: To Hawk's annoyance, Demetri piggybacks off of Cobra Kai's victory at the All-Valley Tournament when two girls pass by him and ask him about Cobra Kai after noticing his towel bearing the logo of the dojo.
* StepfordSnarker: Often uses sarcasm as a way to shield his insecurities, cynicism and neuroses.
* StoneWall: Downplayed. He's a defensive fighter who focuses on blocking and intercepting attacks. Normally applicable to those built like Aisha or Chris, his training enabled him to deal with Hawk's persistent attacks and eventually capitalize on his sloppiness.
* StrongerThanTheyLook: When properly motivated (i.e. fearing for his safety), Demetri is capable of performing some praiseworthy physical feats. During the school brawl, when cornered by a bloodthirsty Hawk, he is able to skillfully block Hawk's wild barrage of punches and then sends him flying back into a trophy cabinet with a single inside crescent kick.
* TeethClenchedTeamwork: This trope ensues when Daniel grows frustrated with Chris and Demetri bickering, and sets the two of them to move a heavy stone as a team. At first, they spend as much time insulting each other as they do actually trying to lift the stone, but once they finish the job they form a solid friendship.
* TellMeHowYouFight: Season 2 on, he combines CowardlyLion and StoneWall. Being as weak as he is, he needs to play a thinking man's game. When faced with a confrontation, his first response is to run for assistance, run and hide afterward, and engage only when he has no room left to run. Then he takes a page out of Aisha's book: turtling and soaking attacks until his opponent lapses, upon which he settles the matter with one or two shots.
* TokenGoodTeammate: [[DownplayedTrope While he's still snarky and mouths off to people]], Demetri still counts as one to the Cobra Kai students after they start succumbing to HeWhoFightsMonsters. However, in Season 2, he turns against them completely after Hawk reacts poorly to his bad Yelp review for Cobra Kai.
* TookALevelInBadass: Learning karate has made him this obviously but he's still considered a newbie at the end of Season 2 since he stil greatly focused on defense.
** His karate skills improve dramatically between the end of Season 2 and Season 3 and he's able to take on several Cobra Kai members head on without relying entirely on defense. During the arcade fight, he's the last Miyagi-do fighter to go down and it's primarily due to being outnumbered. By the end of Season 3, it's safe to say that next to Sam, he is the best student in Miyagi-Do (and the best in applying Miyagi-Do's philosophy of "fighting only when needed").
** In season 4 he makes it to the top four in the males competition of the All Valley Tournament. The other 3 Miguel, Eli, and Robby the latter of whom delivers his defeat.
* TookALevelInKindness: In seasons 1 and 2, he is, to put it quite bluntly... a pessimistic, condescending know-it-all who hates the fact that Hawk changed his persona in order to become more confident (albeit becoming a gigantic {{Jerkass}} in the process) and has no problem being a massive coward when it suits him. Come Season 3 though, he's ''far'' more confident in himself. While it does make him a little brash still, this actually serves to make him far easier to be around as he's more relaxed and less neurotic. He's the one helping to lead the charge at the end of the season to [[spoiler:merge the two dojos]] and he doesn't try to turn it into an AllTakeAndNoGive situation like he's accustomed to. In fact, it's his swagger that allows it to really work. That's right friends, somewhere along the way Demetri actually became cool enough to even have [[spoiler:Yasmine be potentially interested in being his girlfriend]].
* WaxOnWaxOff: Demetri figures out the purpose of the training method, but he whines the whole time, gets a splinter while sanding floors, and finally has to be walked through the moves slowly while Daniel explains them.
* WeakButSkilled: Demetri's scrawny, lanky and probably the weakest Miyagi-Do fighter but eventually with his long speedy legs, he's quick to defend himself and fight back against enemies.
* WeUsedToBeFriends: His friendship with Eli goes out the window completely following the latter's commitment to Cobra Kai and its teachings. Demetri finally exploits this after Hawk's rejection and bullying of him goes too far at Moon's party, promptly proceeding to tell all the guests embarrassing things about Eli. Despite this, Demetri still seems sorry they aren't friends anymore, even when he kicks Hawk into a trophy case at the end of Season 2.
-->'''Demetri:''' [[ApologeticAttacker No hard feelings.]]
** [[spoiler:Despite things in Season 3 escalating to the point where he was willing to break his arm, Hawk ultimately sees the error of his ways, and passes up the chance to take down Demetri by attacking his captors instead, apologizing to him afterwards. Demetri seems more than happy to take up his offer of dealing with the remaining Cobra Kai students. By the end, they're finally back to being the ThreeAmigos with Miguel.]]
-->'''[[spoiler:Eli/Hawk:]]''' [[spoiler:Look, man, I'm sorry. For all of it. [[BashBrothers Do you wanna help me win this thing?]]]]
-->'''Demetri:''' [[spoiler:[[HellYesMoment ... Yeah.]]]]
* TheWorfEffect:
** Inverted. Though Hawk is a top student of Cobra Kai, come their fight during the Cobra Kai/Miyagi-Do school brawl, the pacifistic and amateur Demetri persistently endures Hawk's relentless assaults and wins when he kicks his opponent into a trophy cabinet. [[GlassCannon This emphasizes how poor Hawk's defense is compared to his attack.]]
** Unfortunately played straight in the Golf n' Stuff fight in which Hawk, now able to utilize Kreese's "fighting smart" technique, [[CurbStompBattle pins down Demetri in a matter of minutes]], to the point where he can do nothing but [[AintTooProudToBeg beg for mercy]] as Hawk breaks his arm.
** After making it to the final four of the All Valley in Season 4, he gets demolished 3-0 by Robby in the semi-final to demonstrate how formidable of an opponent he will be for [[spoiler:Hawk]] in the final.
* UndyingLoyalty: As soon as he started training with Daniel in season 2, he has become very loyal to Miyagi-Do even after he had his arm broken in season 3. He was a devoted friend to Eli in season 1 until Eli became Hawk and began to bully Demetri but at least Demetri was able to forgive Eli after he apologized for everything he has done.
* UnwittingInstigatorOfDoom: In season 2, Demetri's negative Yelp review in response to Kreese assaulting him is what starts the chain of events that culminated in the school brawl, as in response to it, Hawk brings a gang to assault Demetri at the mall, and when he's defeated by Sam and Robby, he is encouraged by Kreese to vandalize Miyagi-Do in response. Robby subsequently lies about the medal when Miguel returns it to Sam, which leads to her kissing Miguel while drunk when she finds out the truth from Aisha, which is seen by Tory, who decides to respond by picking a fight at school.
* WhatDoesSheSeeInHim: Miguel, Sam, and Hawk are all perplexed as to how the geeky Demetri managed to land [[spoiler:Yasmine]] as his girlfriend. Even Demetri admits he has no idea how he did it.
* YouWouldntShootMe: When Hawk accosts Demetri at the mall and threatens to take him down, Demetri says, "You'd actually hurt me?" when he realizes that he's not backing down from his word.
[[/folder]]
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