Tanner Buchanan
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 is also known for his role in the Nickelodeon television series "Game Shakers" as Mason Kendall. Career. In 2010, he made his first appearance on television, playing a child role in the "Modern Family" series. Three years later he appeared in "Grey's Anatomy", "Major Crimes", and "The Goldbergs". He had recurring roles on "Girl Meets World", "Game Shakers", and "The  Fosters". In 2016, he played his first main role on television, playing Leo Kirkman in the political drama series "Designated Survivor". 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".