"His people said, 'Steve, this is the most Kanye has ever smiled,'" he added. "When I introduced him, he smiled ... Just tune in and you'll see Kanye smiling. He's happy. He was very happy with that."
According to Harvey, the "Life of Pablo" rapper is a huge "Family Feud" fan. Originally, the celebrity episode was going to have the Kardashian family face off against the Hilton family, and when they backed out, Kanye asked if he and his family could participate instead.
"[Kanye] said, 'I want to play, I've always wanted to play.' So he bought his family, some people you don't know, these cousins," Harvey said. "They were like the best, because they were just like hood ... It was just such a good thing."
The upcoming episode -- which will air "in about a month or so," according to Harvey -- sees Khloe, Kylie, Kendall, Kris, their grandmother Mary Jo Campbell and family friend Jonathan Cheban playing against Team West, consisting of Kim Kardashian West and three of Kanye's family members.
"We're going to get the highest ratings we've ever had," Harvey predicted. He also teased that Khloe is very competitive with Kim and that Kim "didn't know nothing."
"All I want them to do is to get all the Instagram followers to follow me," Harvey joked. "That's all I want out the deal. and I have 400 millions. And then I'm gonna monetize it and quit all these jobs."
No matter what, we're going to tune in just to see Kanye show his pearly whites.