Watch: New trailer for Harry & Meghan documentary
He can be heard saying: "She is becoming a royal rock star".
Morgan has hit back at the use of his soundbite on social media, tweeting: "BREAKING: Princess Pinocchio & Prince Hypocrite use my voice to flog their ghastly new series.
"I’m traumatised by this exploitation."
Morgan then accused the couple of lying in response to a clip in the trailer: "They already tell yet another lie in the first trailer with the Harry Potter paparazzi shot.
"These two wouldn’t know the truth if it slapped them round their latte-encrusted tiaras."
The broadcaster and former journalist also responded to claims from Harry that there is a 'war against Meghan': "Says the guy waging a relentless vicious public war against his own family. Harry’s such a deluded spoiled manipulated brat."
Morgan has previously accused the couple of hypocrisy over the intimate Netflix series, saying: "Imagine bleating about privacy then doing a kiss-and-tell reality series about your private lives?
"Then imagine preaching compassion as you trash your family again?"
Markle has previously revealed that the documentary would focus on the couple, saying to The Cut it would show: "The piece of my life I haven’t been able to share, that people haven’t been able to see, is our love story."
Harry and Meghan signed a deal with Netflix that will see their production company create scripted shows, documentaries and children's programmes.
Harry & Meghan: A Global Event will air in two parts with the first being released on 8 December and the second coming a week later on 15 December.
Watch below: Stormzy explains his defence of Meghan Markle