Johnson, who first rose to fame as wrestler "The Rock," said he was "disappointed" in Hogan, but also felt he was paying the price.
"I've known [Hulk Hogan] for a lot of years," Johnson explained at the 2015 TCA Summer press tour where he called in via satellite on Thursday. "My dad helped train him in Florida in the '70s when he was breaking into the business. My uncles helped train him as well. So I'd not known him to be racist."
“I was pretty disappointed with what I heard, like all of us, by the way," he added. "Pretty disappointed."
According to a joint investigation by the National Enquirer and Radar Online, Hogan -- whose real name is Terry Bollea -- is captured on a sex tape made in 2008 repeatedly using the N-word among other highly offensive remarks. The tape is actually at the center of a high-profile $100 million lawsuit against the website Gawker, after the site published a part of the sex tape in 2012.
"It's funny, it's one of those things where, and not justifying what he said, but we've all talked trash, especially in private," Johnson said. "He said what he said and he's paying the price."
Since the leak of the racist rant, the WWE has removed all mention of Hogan from their website. He's no longer listed as a member of the WWE Hall of Fame, and his merchandise can no longer be found at the WWE Shop. But in a statement to ET, Hogan said he actually resigned from the WWE before they terminated his contract.
"Eight years ago I used offensive language during a conversation," Hogan said. "It was unacceptable for me to have used that offensive language; there is no excuse for it; and I apologize for having done it. ... I am disappointed with myself that I used language that is offensive and inconsistent with my own beliefs. It is not who I am. I continue to work every day to improve as a person, and this matter is an important learning experience for me in that regard. As a result I am resigning from my contractual relationship with the WWE."
Hogan has remained active on his Twitter since the scandal, retweeting his fans' messages of support.
"I'm overwhelmed by the love and support of the millions of people that never 4 a moment left my side, I'm grateful, truly humbled, only love HH," he tweeted on Sunday.