But now, in an exclusive interview with RadarOnline.com, one of William's former radio show interns says the host has been miserable at work for years, too.
"I'd walk into her room and she'd be crying,' the ex-employee revealed. "I didn't know why. She had an office and it's called the pink room. And at that time interns could go in and out and she'd have people in there all the time, production staff."
"There would be months where she would be very sad and then nobody would ever know what it was about," revealed the source. "She's seen me see her cry. You can't hide that."
"The vibe that he gave off was very abrasive. He was not very friendly," said the source. "He's always been stand-offish...I worry about him — the potential of what he can do."
The intern also revealed that Hunter took a lot of the credit in creating The Wendy Williams Show.
"I saw Wendy working very hard, and I never really liked how he got a lot of the acclaim," the source said. "How does he take claim of the show or say he's a producer? She's the talent. So, like, what exactly is he doing?"
The source noted that in 2008 Williams got rid of all of the interns working for her at the time but believes the decision actually came from Hunter.
"I don't think Wendy would've done that because she had been an intern before and she knows how hard the grind is," said the show source. "I think Kevin did that for power."
"He wanted to save face on his behalf and hide the negative aspects that he was contributing because as an intern you see everything," continued the source. "You see the good and the bad. You can see a person when they're most vulnerable. So if he let all the interns go then there is nobody there to protect Wendy."
Williams has been open about her latest battle with drug addiction and relapsing. After fracturing her shoulder in December 2018, the host took three months off. She later returned to reveal she had been staying at a sober house to deal with her substance abuse issues.
And as Radar previously reported, just weeks ago, Williams handed Hunter divorce papers following 21 years of marriage.