"Hey pussies! This is exactly what those assholes at Cobra Kai want, since your one of them, your an asshole too, so are you, so was I, well, at least I wanted to be one, but now Cobra Kai is the worst collection of assholes in the Valley, run by the king of all assholes, so by merging with Eagle Fang, weird name, by the way, can keep us all from getting shit on anyone, then we'd all be assholes not to do it!"
―Demetri [src]

Demetri is initially a bullied victim until he joins Miyagi-Do Karate, where he learns how to stand up for himself. The rivalry between the dojos causes him to lose his best friend for a time, but their friendship is eventually rekindled when the latter finally sees the error in his ways.


Pre-Cobra Kai

Demetri meets and befriended Eli Moskowitz in childhood. Demetri has been unpopular his entire life and was often a subject of bullying.

Cobra Kai

Season 1

Demetri is friends with Eli. He soon meets and becomes friends with Miguel as well, despite warning Miguel about his lowly social status. He is regularly bullied by Kyler, but doesn't feel there is anything he can do about it. After Miguel beats up Kyler and his group Demetri decides to join the Cobra Kai Dojo but soon quits after he is embarrassed by the sensei Johnny Lawrence. In the episode "Different but Same", he is shown to have a crush on Yasmine. After Miguel wins the All Valley Karate Tournament, he tells Miguel he might join Cobra Kai again.

Season 2

Despite having limited screen-time in season 1, Demetri's role increases significantly in season 2 due to his character development, as well as story-line. He can be seen as one of the more important characters this season.

Demetri celebrates Cobra Kai's victory at the All Valley tournament with Miguel, Aisha, Hawk and other Cobra Kai members. He soon decides to join again. When he goes back to the dojo to re enroll he sees Johnny's sensei John Kreese, though he does not know who he is. He is happy to see him instead of Johnny as his last encounter with him ended badly. He first tells Kreese his conditions and expectations, but after looking at his tattoos he tells him how anatomically incorrect they are and even touches them. However, an annoyed and angry Kreese hits him. Demetri complains to Hawk about what Kreese did, but Hawk shows no sympathy for him and tells him to man up.

Demetri, enough with the bullying, joins Miyagi-Do Karate and writes a negative review of Cobra Kai, which angers Hawk. He however, struggles at first and does not look interested. When sensei Daniel LaRusso asks him why he is here, he talks about how he has been bullied and now he lost his best friend because of Cobra Kai, and now wants to prove he can fight back. Daniel tries to give him encouragement but Demetri is not confident.

While Demetri along with Miyagi-Do students Robby and Samantha LaRusso (Daniel's daughter) are eating in the mall, he goes to the comic book store. While there Hawk and other Cobra Kai members surround him and force him to take down his review of Cobra Kai, but when Demetri refuses Hawk attacks him. Demetri runs away but is soon cornered by them. However, Robby and Sam defend him and beat up the Cobra Kai's.

When some of the Cobra Kai's who bullied him in the mall join Miyagi-Do, Demetri, Robby and Sam are unhappy but Daniel lets them join. After Demetri gets into an argument with one of the former bullies (Chris), Daniel decides to tell them the time he joined Cobra Kai, in order to show how everyone Cobra Kai can corrupt people, and people can change. Demetri then starts to get along with Chris.

Over time Demetri is able to apply his intelligence to his training, which makes him before confident. During a party at Moon's house Demetri attempts to bond with Hawk by talking to him about "Doctor Who'. His attempt seems to work as Hawk is interested. However, after he suggests to Hawk to have inner peace Hawk dumps beer on his head. Fed up with his treatment, Demetri gets revenge by taking a mic and announcing to everyone all the embarrassing stories about Hawk. An angry Hawk tries to attack him, but Robby and Chris stop him, and the cops arrive. Hawk threatens Demetri that he will beat him up at school.

When a school brawl between Cobra Kai and Miyagi-Do occurs the next day at school, Demetri gets Mr. Palmer and asks him to stop the fight, but he refuses. When Hawk spots Demetri, Demetri runs away and Hawk chases him. Demetri tries to hide in the computer lab but Hawk finds him. Demetri runs away again. However, Hawk eventually catches him and starts attacking him. After being hit twice, Demetri uses Miyagi-Do Karate to block and counter all of Hawk's attacks. He then kicks Hawk into a trophy case. However, he apologizes to him after, showing he still cares for Hawk despite his bullying.

Season 3

Demetri is still at odds with Hawk. However he is becoming friendly with Yasmine, due to her lack of popularity. In the cafeteria he shows off his Dinosaur valley project/diorama, which impresses Moon and to an extent Yasmine. Hawk then destroys his project, upsetting Demetri, who mocks his sleep enuresis. Later that day (most likely), he gets revenge on Hawk in a soccer game by calling him a loser that lost the 'hottest' girl (Moon) in the school, and then pushing and leg sweeping him. However, he is then headbutted by Hawk. Unfortunately for Demetri, Sam and two other students, they get detention, but skip it and do karate training which Sam runs while Daniel is at Okinawa, while Hawk and his friends are off the hook.

One day, when Hawk and some of the Cobra Kai's are causing trouble at the arcade, where Chris works, Demetri, Sam and two other Miyagi Do students arrive to help Chris stop the Cobra Kai's. Then, a fight emerges between both dojos. Demetri kicks a Cobra Kai (Mikey most likely) to the ground, before facing Hawk, who easily pins him to the ground and grabs his arm. The other Cobra Kai's encourage Hawk to break his arm including Tory, while Demetri pleads him not to and tries to get Hawk remember their old friendship. After momentarily hesitating, Hawk breaks Demetri's arm after being peer pressured by Tory, Mikey and the other Cobra's, causing Demetri to scream in pain, while Chris is beaten to the ground by Mitch and and Rickenberger, and Samantha freezes and suffers a panic attack over her past fight with Tory in the school brawl.

Demetri's shows up to school with a cast. He tells Miguel what Hawk did. However, he is bullied by Kyler, who draws a dick on his cast and shows it to everyone, causing them to laugh, and smacks his head. However, Kyler's bullying earns him Yasmine's sympathy, who knows how it feels to be mocked since the wedgie incident, as she was mocked on the first day back by Nate and Chris. Yasmine then signs his cast and covers Kyler's vandalism, making him happy. One day Demetri and Yasmine are caught kissing by Miguel and Sam. Yasmine walks away embarrassed, while Demetri tells Miguel and Sam he is in love and reveals that he and Yasmine are dating.

"By merging with Eagle Fang. Weird name by the way. Can keep us from getting shit on. Then we'd be assholes not to do it."

On one night, when Demetri (who is no longer wearing the cast) and other Miyagi students are at Sam's house, Miguel and his fellow Eagle Fang Karate students show up via Sam's invitation, where Sam tells everyone that they should all work together, However, the group sans Sam and Miguel don't agree with this. When Mitch and Bert attempt to leave, Demetri convinces them to stay by making a speech about they need to work together and stand up to Cobra Kai. Then, several Cobra Kai's show up and attack them. Demetri is able to hit and fend off a few Cobra Kai's, but is soon cornered and and attacked by Doug and another Cobra Kai, with the former grabbing his arm (same arm that was broken by Hawk and Tory). Doug encourages Hawk to attack him. However, realizing that what Kreese is doing is wrong and that Johnny was correct about making Hawk who he was, as well as that Kreese doesn't care about him, he saves Demetri by knocking down the two Cobra Kai's. He then apologizes to Demetri for everything, resulting in their friendship being reconciled, and the two work together to defeat several of Hawk's now former classmates. Then, Demetri, Hawk and Miguel run to the Miyagi Training Building in the back of the house after defeating the Cobra's, where Sam has disarmed Tory. Hawk tells Tory that the fight is over. Tory stops and threatens Sam that their rivalry will never end and tells Hawk to watch his back, to which Demetri says Sam and Hawk have friends watching out for them.

The following morning at Miyagi Do, Demetri and Hawk high five and hug, same with Chris and Mitch, and Bert and Nathaniel, who all become friends again and unite in one dojo being run by both Daniel and Johnny.


"Skeleton. Classic."
―Demetri to Miguel Diaz[src]

Demetri is a sarcastic and awkward person with low self-esteem. He considers himself a jaded realist but he actually has no confidence in himself. When Johnny embarrasses him on his second day at the Cobra Kai Dojo Demetri immediately quits.

Demetri is a minor character in season 1. His screen-time is limited and he doesn't have any sort of story-line. Outside his self esteem issues and friendship with Miguel and Eli, nothing is known of him. In season 2, Demetri's character is more developed. His sarcasm is still present, but has reduced significantly. At first, he attempts to re-enroll in Cobra Kai, but after Kreese hits him, he writes a negative review about the dojo. This results in his best friend, Hawk, ending their friendship and bullying him. He eventually joins Miyagi-Do Karate. Despite struggling and still showing lack of confidence, as time goes by he is able to learn the Miyagi-Do Karate techniques, which allows him to become more confident and a better fighter. After Hawk pours beer on his head at Moon's party, Demetri decides to tell embarrassing stories about him in front of the other attendees (namely, Hawk's bawling when Dobby dies while the two watched Harry Potter, and especially Hawk having sleep enuresis).

During the school brawl Hawk chases Demetri who tries to get away from him, but Hawk eventually catches up to him and starts attacking him. Demetri however uses his Miyagi-Do Karate technique to defend himself. He then kicks Hawk into a trophy case, injuring him as a result, though he does apologize, showing that he still cares about him despite the latter's constant bullying.

In season 3, Demetri is shown to know longer be afraid of Hawk. Growing more confidence and assertiveness due to his arising popularity, he does stand up to Hawk by pushing and leg sweeping him to the ground. After Hawk breaks his arm and Kyler mocks his cast, he earns the sympathy of Yasmine, who is now nicer to him due to her knowing what it's like to be mocked after the wedgie incident. The two are caught kissing by Miguel and Sam, but Yasmine denies wanting to date him. When Sam tries to get Miyagi Do and Eagle Fang Karate to work together, Demetri makes a speech that they need to work together to defeat Cobra Kai. He is also later seen as a mediator between the two, ironing out the details of their alliance. Agreeing that all should train at Miyagi-Do Dojo, but deadlocked on team name, gi design, post training snacks and sensei dispute protocol. During a fight at Sam's house, Demetri is saved by Hawk, who has realized the error of his ways, and the two reconcile their friendship and work together to defeat several Cobra Kai's. Demetri stands up for his best friend when Tory threatens Hawk for defecting, telling Tory that Hawk's friends will be watching his back. The day after the fight, Hawk has joined Eagle Fang and the two are shown high fiving and hugging. Demetri has grown from an awkward and sarcastic nerd, to a capable and more assertive fighter and person. Demetri's sense of humor is featured more than it was in season 2, but not as much as it was in season 1.

Fighting Style

Demetri is not a natural fighter. He is never seen fighting until he joins Miyagi-Do, and even there he struggles with technique. However, he does benefit from his sharp intellect, instantly deducing that Daniel's painting and sanding chores are muscle memory exercises. Daniel eventually makes use of Demetri's intelligence, presenting a blocking drill as a puzzle to be solved. This helps Demetri become a fairly solid defender, making him the opposite of the aggressive Hawk. During his fight with Hawk, he successfully uses the Miyagi-Do technique to counter all of his former friend's strikes, finally defeating him by kicking him into a trophy case.

Demetri's lack of strength is compensated by his speed; he is a very fast runner. Demetri is able to consistently outrun people, including several physically fit Cobra Kai students.

As seen in Season 3, during the brawl at the LaRusso household, Demetri not only takes defense seriously by defending the smaller Bert and Nathaniel from the larger Cobra Kai members; he's also shown to be a pragmatic fighter on his feet. His defense is shown to have greatly improved, being able to take on a few Cobra Kai students at the laser tag arcade and house fight, though he's easily overpowered by Hawk in the former. He also has good strategy, swinging Bert around for higher kicks. When combining his skills with Hawk's, the two make an effective team of defense and offense against several Cobra Kai students.



Hawk is Demetri's brother figure and former main rival/enemy. They became friends in childhood, long before the events of Cobra Kai. They became friends due to their similar interests, and possibly because of their shared unpopular status. They become friends with Miguel in season 1 of Cobra Kai. Halfway into season 1 they join Cobra Kai, though Demetri quits after being embarrassed by Johnny. Despite quitting, the two are still friends.

"Sorry... Eli"
―Demetri to Hawk[src]

In season 2, their friendship becomes strained when Demetri complains to him about being hit by Kreese, but Hawk insults him and shows no sympathy. Their friendship comes to an end after Demetri writes a bad review about Cobra Kai due to Kreese hitting him, causing Hawk to attack him in the mall along with some of his Cobra Kai friends.

Later in the season, Demetri attempts to bond with Hawk at Moon's party by talking to him about Doctor Who, which appears to work as Hawk seems interested, but then it sours when Demetri suggests Hawk gain inner peace, causing Hawk to respond by dumping beer on his head. Furious over the treatment, Demetri gets revenge by telling everyone embarrassing stories about Hawk, enraging the latter. The following morning during the school brawl, Hawk attempts to get revenge by chasing Demetri across the school and attacking him, but is defeated in the end when the latter uses his Miyagi Do tactics to counter the attack, before kicking him into a trophy case.

In season 3 their enmity continues. Demetri stands up to Hawk on a few occasions, while Hawk begins to show some remorse for his aggression. Their friendship is ultimately rekindled during a fight at the LaRusso house in the finale, when Hawk finally recognizes the error of his ways. The two friends fight off the Cobra Kais and afterwards Demetri stands up for Hawk when an angry Tory threatens him. Later, the two share a handshake and a hug as they stand together when Miyagi-Do and Eagle Fang begin training together.

―Demetri to Hawk[src]

Miguel Diaz

Miguel is one of Demetri's best friends. After meeting in the cafeteria in season 1 of Cobra Kai, Demetri and Eli quickly befriend him. Miguel is something of an outcast, which helps him bond with Demetri. Halfway into the season Demetri attempts to join Cobra Kai after witnessing Miguel beat Kyler and his gang, but ends up quitting after being humiliated and physically hurt by Johnny Lawrence. Despite quitting he remains close with Miguel, and even tells Miguel that he doesn't need Cobra Kai because he has him.

In season 2, the two rarely interact due to Demetri joining Miyagi Do, though the two are probably still friends.

At first in season 3, Demetri buys Miguel a comic book as a get better present. Then when Miguel first meets Demetri at school in season 3, he is concerned when he sees his broken arm, and Demetri tells him how the Cobra Kais have become a pack of bullies. By the end of the season the two are training together with the other Miyagi-do and Eagle Fang students.

Samantha LaRusso

Sam is also one of Demetri's best friends. They first meet in season 2, when Demetri decides to join Miyagi Do. Despite both being in Miyagi Do they don't have much interaction. The only time they are shown together outside of class is when the two and Robby are eating (and later fighting the Cobra Kais) at the mall. Although Demetri seems to slightly annoy Sam at times with his antics she is always friendly and supportive towards him.

In season 3 they have more interaction. Early on Demetri assures Sam they're on the same side against Cobra Kai. When Demetri's science project gets destroyed by Hawk and the two begin a dispute, Sam immediately goes to Demetri's side to give him support, and tells Hawk to back off or he "won't be lucky", showing her care for Demetri's feelings. Sam encourages Demetri and some of the other Miyagi Do student to get aggressive with the Cobra Kais during a school soccer game, but this earns them detention. After Nathaniel is beaten up by Cobra Kai Sam re-opens Miyagi Do, with Demetri rejoining. After Demetri gets his arm broken by Hawk, Sam feels tremendous remorse over being unable to help her friend. In the finale, when Sam's attempt to unify Miyagi Do and Eagle Fang almost fails, Demetri gives an impassioned speech that leads to the dojos successfully merging. He then seems to take charge of the discussion.

As Sam is the senior student in Miyagi-do, Demetri looks to her for leadership and backs her up when she tries to take the fight to the Cobra Kai students. Even after his arm is broken during the Laser Tag fight Demetri remains loyal to Sam.

Daniel LaRusso

Although their relationship is initially strained, over time Daniel becomes a father figure to Demetri. In season 2, Demetri seeks to join Miyagi-do after getting assaulted by Kreese back at the Cobra Kai Dojo. Daniel starts Demetri's training by having him do chores around the dojo, which Demetri instantly deduces are muscle memory exercises. Once Demetri completes the chores Daniel teaches him self-defense. At first Demetri complains about it because he is not used to fighting. Annoyed, Daniel asks Demetri why he joined Miyagi-Do. Demetri responds that he has been unpopular throughout his life, and now the few friends he does have are joining Cobra Kai and becoming jerks. Daniel then starts to understand him. Demetri struggles with his training, but Daniel realizes the key is to appeal to Demetri's keen intellect, presenting martial arts as a puzzle to be solved. This clicks and Demetri begins to gain both skill and confidence.

In season 3 Demetri and Daniel don't interact until later in the season. The first time they are together is when Miyagi-Do is going through basic drills and Demetri is having trouble. A frustrated Daniel tells him that if he doesn't follow what they're learning he will be back in that cast. The last time they are together is the the last scene of the finale, when Miyagi Do and Eagle Fang have merged and are now training and being run by Daniel and Johnny.

Robby Keene

Robby is Demetri's friend. They become friends when Demetri decides to join Miyagi Do in season 2. When Demetri is cornered by Hawk and his Cobra Kai friends, Robby and Sam defend him, and defeat Hawk and the other Cobra Kai's.

In Season 3, they have no interaction at all due to Robby going juvie for a few weeks, and ultimately aligning with Kreese and joining Cobra Kai's, who are facing off against Eagle/Miyagi Fang Do's.


Chris is Demetri's friend and former rival. In season 2 of Cobra Kai, Chris backs Hawk when he tries to beat up Demetri in the mall, even though Chris initially isn't keen on doing so. When Chris joins Miyagi Do, Demetri is unhappy due to the mall incident. Despite Chris apologizing, Demetri is still at odds with him at first. However, as time goes by, the two begin to get along after Daniel tells everyone the time he joined Cobra Kai. They become close friends, this is presented when Chris steps in to stop Hawk from attacking Demetri at Moon's party.

In season 3, they don't have much interaction, but it is clear they are still good friends.

Johnny Lawrence

Johnny is Demetri's former nemesis. When Demetri attempts to join Cobra Kai in season 1, Johnny embarrasses him by taking him down, which causes Demetri to quit.

The two don't interact in season 2, but when Demetri sees Kreese when he attempts to reenroll at Cobra Kai, he tells him he's happy because things did not go well with "the other guy" (referring to Johnny).

In season 3, they don't interact, but at the end of the season, when Miyagi Do and Eagle Fang merge, the co-senseis are Johnny and Daniel, making Johnny Demetri's sensei.


Yasmine is Demetri's love interest. In season 1, Demetri expresses an attraction to Yasmine, while the latter mocks him for being a loser. At the party in Different but Same Yasmine looks disgusted when Demetri attempts to chat with her.

In season 3, Yasmine is rude to Demetri at first, but begins to warm up to him when she sees the dinosaur model he created for their group science project. After Kyler draws a penis on his cast, Yasmine shows sympathy by signing his cast and telling him she now knows what it feels like to be laughed at since the wedgie incident. When Demetri sympathizes with her in return she looks visibly touched. Later she is caught kissing Demetri by Miguel and Sam, but out of embarrassment she insults Demetri and says she would never date him, although she gives him a flirtatious look and touches his chest before she leaves. Afterwards Demetri tells Miguel and Sam he is "101% in love."


After Moon begins dating Hawk she and Demetri are frequently seen together. When Hawk begins bullying Demetri, Moon angrily breaks up with him, stating that she doesn't want to date a bully.

In seasons 2 and 3 Moon seems quite fond of Demetri; he makes her laugh and she is very impressed by his hard work on their science project in The Right Path. Later in the same episode Demetri states that Moon confided in him that she loved Hawk, indicating that he and Moon have become fairly close.


Kyler is Demetri's bully. While at the library with Miguel and Hawk in season 1, Kyler and Brucks come and start bullying them, with Kyler throwing Demetri's backpack in the trash. However, after Miguel defeats Kyler and his gang Kyler doesn't bully him for the rest of the season, as he is afraid of Miguel.

After breaking his arm in season 3 Demetri finds himself again being bullied by Kyler. When Demetri accidentally bumps into Kyler in the cafeteria the latter draws a penis on his cast and shows it to everyone, causing many to laugh. Later, in the hallway Kyler smacks Demetri and mocks him for the defaced cast.


  • Demetri can be compared the following characters: 
    • Daniel LaRusso - Similarly to how Daniel ran from the Cobra Kais during the Halloween party, he ran from the Cobra Kais in the mall. Unlike Daniel, who brought that attack on himself by soaking Johnny with a hose, Demetri had been minding his own business when threatened by Hawk, and ran out of a sense of self-preservation.
      • Demetri was attacked for writing a bad Yelp review about Cobra Kai, which can be similar to Daniel being attacked for soaking Johnny. However, Demetri did not attack Hawk and the other Cobra Kai students in his review, while Daniel flat out soaked Johnny with the hose.
  • Demetri is a supporting character in season 1 with no story-line, but season 2 sees his character being developed and having a story-line, making him somewhat of a main character that season.
  • In Season 1, Demetri is sarcastic and awkward. In Season 2, he is shown in a more serious and sympathetic light. In Season 3, fans have hailed it his best appearance, often pointing out his character development.
  • Demetri was very unpopular among the fanbase in the first 2 seasons, because he was seen as annoying, irritating, and at times condescending. Despite his increased storyline in season 2, he was still looked at very negatively. In season 3 however, he gained a lot of popularity with the fans, due to him being seen as a more assertive and confident person and fighter.
  • Demetri's sarcasm in season 2 is much less than it was in season 1 most likely because he had a story-line in season 2.
  • Demetri's last name is not known, but it falls between A-G as seen in Different But Same. It's possible he is of Greek or Russian heritage, considering his first name.
  • Because his last name is unknown, it is possible that he is related to one of the characters from one of the original films.
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