Watch Series: American Ninja Warrior Junior Released in (2018) - Season 3 produced by USA, The TV Series categorized in Family, Kids, and content rating 12 with duration 30 min broadcasted as these networks NBC, Universal Kids, Streamed at Putlocker & directed by Ushio Higuchi. The next generation of \"American Ninja Warrior\" begins, as some of the show's biggest fans now get an opportunity to compete for the chance to be named American Ninja Warrior junior champion. - Season 3