Baldoni, in a lawsuit filed in New York federal court on Thursday, alleges extortion, defamation and claims related to breach of contract, among several others. He’s joined by his film studio, Wayfarer, and its chief executive Jamey Heath, and their public relations representatives, Melissa Nathan and Jennifer Abel. They seek at least $400 million.

"It is not strange that Ryan Reynolds was named in light of Baldoni's theories in the complaint," a defamation attorney tells Yahoo Entertainment.

"It Ends with Us" director Justin Baldoni accused Blake Lively and Ryan Reynolds of defamation, while Lively's team says his attack is "desperate."

Escalating his litigiousness, Baldoni has sued Lively and her husband Ryan Reynolds for $400 million, alleging that the power couple stole control of Baldoni's film as a director and orchestrated an effort to destroy his career and reputation with what he's referring to as false allegations of sexual assault.

The "Deadpool" franchise is named in Justin Baldoni's new lawsuit against "It Ends With Us" costar Blake Lively and her husband Ryan Reynolds. Here's why.

Justin Baldoni is leaning on the ones closest to him amid the “It Ends With Us” drama. After the actor, 40, filed a lawsuit against Blake Lively and Ryan Reynolds, their publicist Leslie Sloane and Sloane’s p.r. firm Vision PR Inc. for $400 million on Thursday, he revealed how he’s coping.

Baldoni and Lively have been at odds since the now-endless It Ends With Us press tour, after which rumors of sexual harassment allegations spilled into the press. By the end of Us, Baldoni had filed suit against the Times for its bombshell story accusing him of harassing Lively and orchestrating a smear campaign against him.

Baldoni’s lawyer, Bryan Freedman, had said for weeks he planned to file a suit against Lively, Baldoni’s co-star on “It End With Us,” and Reynolds, Lively’s husband.

Ryan Reynolds allegedly told a Hollywood agent that his wife Blake Lively's It Ends With Us costar Justin Baldoni was a "sexual predator," according to a lawsuit filed by Baldoni against the couple.

Baldoni, his studio Wayfarer, and their publicists are alleging civil extortion, defamation and a slew of contract-related claims about the film It Ends With Us.

It Ends With Us” actor and director Justin Baldoni has sued his co-star Blake Lively and her husband, “Deadpool” actor Ryan Reynolds, for defamation.