Deadpool joining Marvel Cinematic Universe with R-rated 3rd film

It's official: "Deadpool" is joining the Marvel Cinematic Universe with the upcoming third film starring the foul-mouthed merc.

In an interview with Collider, Kevin Feige, president of Marvel Studios, not only dished that a third installment of the raunchy action-comedy is happening, but that it will be a part of the MCU.

"It will be rated R and we are working on a script right now," he shared, adding that Ryan Reynolds, who plays Deadpool, is "overseeing a script right now."

"It will not be [filming] this year ... but it’s exciting for it to have begun," he continued. "Again, a very different type of character in the MCU and Ryan is a force of nature, which is just awesome to see him bring that character to life."

Feige also revealed that Emmy Award-winning sisters Lizzie Molyneux-Loeglin and Wendy Molyneux -- who have written for the animated comedy "Bob's Burgers" since 2012 -- are also working on the script.

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In the meantime, Marvel fans can tune into "WandaVision" when it premieres on Disney+ on Friday, Jan. 15.

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