Daniel Lubetzky will join Shark Tank as a full Shark starting with Season 16, which premieres next month.Christopher Willard/ABC via Getty ImagesDaniel Lubetzky, founder of snack brand Kind, is joining "Shark Tank" as the show's newest Shark.Lubetzky will take a permanent seat on the show after five seasons as a guest.Lubetzky told BI that he watches for founders who can be honest about their shortcomings.Daniel Lubetzky has seen dozens of pitches from founders on the ABC television series "Shark Tank."But Lubetzky will be hearing even more pitches as he becomes the show's latest new judge — or "Shark" — starting with the show's new season next month.Lubetzky isn't a stranger to Shark Tank or startups.