Conservative commentator and Fox News host Mark Levin attacked actor Dwayne “The Rock” Johnson over his endorsement of Democratic nominee Joe Biden on Monday, calling the “Fast & Furious” star a “self-righteous egomaniac.”

“Self-righteous egomaniac. And why should we care who another actor endorses? What a surprise, he endorses the Democrats,” Levin tweeted. “Well, then, let’s stop thinking for ourselves, no longer worry about the Republic, vote for a mentally incapacitated lifetime political hack, because ‘the Rock’ is stupid enough to do so. Uh, no."

In an Instagram video on Sunday, Johnson announced his endorsement of Biden.

“As a registered Independent for years now with centrist ideologies, I do feel that Vice President Biden and Sen. Harris are the best choice to lead our country, and I am endorsing them to become president and vice president,” Johnson said. The celebrity then showed a recent discussion he had with Biden and Democratic Vice Presidential nominee Kamala Harris.

Levin, an ardent supporter of President Donald Trump, has frequently used incendiary language to describe Democrats. Levin recently criticized Rep. Alexandria Ocasio-Cortez, D-N.Y., saying she would have been a “terrific executioner in Stalin’s regime.”

Numerous Hollywood actors, athletes and musicians support Biden, such as George Clooney, Tom Hanks, LeBron James, Taylor Swift and Bruce Springsteen. Celebrities in favor of Trump include Jon Voight, Kid Rock and Ted Nugent.