9 août 2022 · Mike Barnes will return for Cobra Kai season 5 New photos from Netflix reveal that Sean Kanan will reprise his role as Karate Kid III villain Mike Barnes in the upcoming fifth. 9 août 2022 · Among that group of familiar faces is actor Sean Kanan, who is reprising his role as Mike Barnes from “The Karate Kid III.”. The details around how Barnes resurfaces in “Cobra Kai” remain.