Russell Brand is opening up about his previous marriage to pop star Katy Perry and it's not looking good.

In his new documentary, 'Brand: A Second Coming,' the actor slammed his marriage and ex-wife saying it could have been fake.

“Oh my f—king god. I’m living this life of the very thing I detest,” Brand is seen exclaiming before a video of Perry is shown. “Vapid, vacuous celebrity. Fame and power is bulls—t."

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According to the UK's Daily Mail, the 40-year-old actor also mocks Perry’s accent in the film and tells his friend Stephen Merchant that after traveling to Africa in 2010, he realized his relationship with the 'Dark Horse' songstress was "not a resolution to anything spiritual" and that "at some point, to be happy, I’m going to have to walk away."

Us Weekly reports that Brand attempted to keep the film from showing at SWSX this past March and director OndiTimoner revealed it was "difficult" to work with the actor. "There are a couple of things I took out for ethical reasons for Russell,” Timoner explained of cuts.

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Brand later explained on his website that watching the documentary was "very uncomfortable" for him. Brand and Perry, 31, wed in 2010, and the comedian filed for divorce 14 months later.

Watch 'Brand: A Second Coming' below: