“Trump scares me,” the “Shark Tank” star said (via CNN) after speaking on behalf of Clinton and Tim Kaine during their campaign stop in his hometown of Pittsburgh. “Donald, initially, I really hoped he would be something different, that as a businessperson, I thought there was an opportunity there. But then he went off the reservation and went bats— crazy.”

Cuban used a slang vulgarity to describe Trump and added, “I told him directly, at some point you have to learn, at some point you have to read and that that job is all about uncertainty and if you don’t do the work, that is not good for this country. And he just doesn’t do the work.”

Cuban has described himself as “fiercely independent,” has said that he has no political affiliation and his name was floated, however briefly, during vice-presidential nominee speculation. In May, he told Chuck Todd on “Meet the Press” that Trump’s candidacy cleared the way for non-traditional candidates and eliminated the need for “Stepford candidates.”

On Saturday, he endorsed Clinton-Kaine.

“I am ready to vote for a true leader, I am ready to vote for the American Dream. I am ready to tell the world that I am here to endorse Hillary Clinton.” (Cindy Boran WP)

Mark Cuban is a success in the business world, celebrity reality TV star, and the owner of the Dallas Mavericks. Why does Mark’s endorsement of Hillary matter so much? I’d say because of people like me. I am a huge Mark Cuban fan and even though I am not decided on what I want to do come election day, Mark endorsing Hillary makes me naturally sway in that direction, simply because of the influential affect Mark has on me. I’m sure is he an influence on many Americans around the world, and that’s why it matters.