William Michael "Billy" Zabka (born October 20, 1965) is an American actor, martial artist, screenwriter, and film producer. Zabka is best known for his role of Johnny Lawrence in The Karate Kid (1984), The Karate Kid Part II (1986), and decades later reprises the role of Johnny in the Netflix series Cobra Kai (2018-), along with Ralph Macchio as Daniel. During the 1980s, Zabka appeared in the comedy movies Just One of the Guys (1985) and Back to School (1986). Zabka also co-starred on the CBS television series The Equalizer as the son of the title character (1986–89). He also played Jack, Audrey's jock boyfriend, in National Lampoon's European Vacation (1985). During the 1990s and 2000s, he acted mostly in independent films while studying to be a filmmaker. In 2003, he wrote and produced the short film Most, shot on location in the Czech Republic and Poland. Most (aka The Bridge) had its world premiere at the Sundance Film Festival 2003 and won numerous awards at prestigious film festivals, including Best of Festival at the Palm Springs International Festival of Short Films in 2003. In 2004, he was nominated for an Academy Award for Most in the Live Action Short Film category. 윌리엄 자브카(1965년생, New York City, New York, USA) 는 배우로, 대표작으로 베스트 키드, 뜻밖의 우정, 여성상위시대가 있으며, 그 외에도 지미 팰런의 투나잇 쇼, 내가 그녀를 만났을 때, 싸이크, 코브라 카이, The Equalizer, MTV Movie & TV Awards, 베스트 키드: 레전드, The Greatest American Hero, 핫 텁 타임머신, 베스트 키드 2, Reunited Apart, 스마일리 페이스 등 다양한 작품에 출연했다. (오뜨랑에서 실시간으로 번역된 한글 프로필도 확인할 수 있어요) 2025년 베스트 키드: 레전드에서 Johnny Lawrence 역을 맡았다. 2024년 The Cobra Kai Movie에서 William Zabka 역을 맡았다. 2024년 제이크 폴 vs 마이크 타이슨에 출연했다.