Tanner Buchanan, born December 8, 1998, is an American actor. He is best known for his roles as Leo Kirkman in the ABC political drama Designated Survivor and Robby Keene in the Netflix series Cobra Kai. He was also in the Nickelodeon television series Game Shakers as Mason Kendall. In 2018, he began playing Robby Keene in the YouTube Premium (and later Netflix) series Cobra Kai. He also starred in the remake of She’s All That called He’s All That.