Who is Demetri in Cobra Kai?
The mouth that binar— the nerd who chose a side · Miyagi-Do
Demetri (The mouth that binar— the nerd who chose a side) is a character in Cobra Kai, part of Miyagi-Do. Demetri Alexopoulos would like it noted that karate cults are objectively ridiculous — right up until his best friend's new mohawk starts hunting him through arcades, and the Yelp review he wrote of Cobra Kai earns him a broken arm over a display case. Miyagi-Do gets the Valley's most sarcastic recruit and its most loyal: Demetri fights like a man narrating his own surprise, and his binary-brothers reconciliation with Hawk is the teen war's gentlest peace treaty.
When does Demetri first appear?
Demetri first appears in Season 1, Episode 1 (“Ace Degenerate”) of Cobra Kai (2018–2025, Netflix).
Who is Demetri connected to?
Relationships already established when Demetri first appears — nothing from later episodes.
- Hawk — Binary brothers — broken, rebuilt
Which group does Demetri belong to?
By the time Demetri appears, Miyagi-Do also includes Daniel LaRusso, Robby Keene, Samantha LaRusso.
Who else is introduced in this episode?
- Johnny Lawrence — The '84 runner-up, rebooting on Coors and willpower
- Daniel LaRusso — The champ with the car dealerships and the bonsai
- Miguel Diaz — The student who made Cobra Kai mean something else
- Robby Keene — Johnny's son, raised by everyone else
- Samantha LaRusso — The heir of Miyagi-Do, done being protected
- Hawk — The flip — from lip scar to mohawk and back to himself
- Carmen Diaz — The mother next door who civilizes the sensei
- Amanda LaRusso — The CFO of the dealership and the marriage
Watching right now? Open Demetri in the interactive map, set the episode you've reached, and see every relationship and bio update you already know — spoiler-free.