Oona O’Brien

O’Brien is best known for Devon Lee in Cobra Kai. Her earlier screen work includes the short film Sky High.

Biography

Oona O’Brien plays Devon Lee in Cobra Kai. Introduced as a competitive student recruited by Johnny Lawrence, Devon becomes involved in the rivalries between the show’s karate dojos. O’Brien stayed with the Netflix series through its final season, with her work combining acting, fight choreography and the physical preparation required for tournament scenes.

O’Brien is best known for Devon Lee in Cobra Kai. Her earlier screen work includes the short film Sky High.

Known for

Devon Lee in Cobra Kai

O’Brien is best known for Devon Lee in Cobra Kai. Her earlier screen work includes the short film Sky High.[1][2][3][4][5]

Career highlights

  1. Career 1

    An early short-film role

    Before Cobra Kai, O’Brien appeared in the 2020 short Sky High. It is an early screen credit in a career that became closely associated with Devon Lee.[1]

  2. Career 2

    Joining Eagle Fang

    Devon entered Cobra Kai in season four as a recruit for Johnny Lawrence’s Eagle Fang team. Her introduction put O’Brien into the show’s school-age cast and its All Valley tournament storyline.[1]

  3. Career 3

    A different dojo in season five

    Season five took Devon into Cobra Kai, bringing O’Brien into scenes with Peyton List’s Tory Nichols and Alicia Hannah-Kim’s Kim Da-Eun. In her interview about that season, she discussed Devon’s changing position within the rival dojos.[1]

  4. Career 4

    Training and filming with the cast

    Netflix’s cast feature describes the physical preparation behind the young actors’ karate scenes. O’Brien also recalled the season-five waterpark shoot in a ComingSoon interview, including the cast spending time together after filming.[4][3]

  5. Career 5

    Returning for the final season

    Netflix names O’Brien among the returning cast for season six. Devon’s continued role kept her in the ensemble as Cobra Kai brought its long-running karate story to a conclusion.[2]