'Family Guy' Season 14 Cast News, Update: Ashton Kutcher and Two Other Notable Names Set to Join the Show's Guest Star List

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Fox's hit adult animated sitcom "Family Guy" never seems to run out of reasons to surprise its fans. New casting updates indicated that Ashton Kutcher, John Mellencamp, and Ed O'Neill will be appearing on the upcoming 14th season of the show on top of the already announced A-Listers.

Citing Entertainment Weekly, the report from International Business Times said that Ashton Kutcher, the actor and husband to the show's own Mila Kunis (who stars as Meg Griffin), will be appearing as himself in a live-action short for Season 14.

Although not much has been divulged about his involvement, executive producer Steve Callaghan told the media outlet that fans will certainly be delighted with him being on the show as they wrote him some of the "most ridiculous dialogue."

"He just couldn't have been a nicer guy or a better sport about it," the EP said about the 37-year-old.

John Mellencamp, on the other hand, will play an animated version of himself. The singer-songwriter is expected to perform an original song during the season premiere.

Meanwhile, the Modern Family star, Ed O'Neill, will voice-act Joe Swanson's dad who visits Quahog for a particular episode.

"[O'Neill]'s a lot of fun to work with and that turned out to be a great episode," the showrunner told EW. "I wouldn't be surprised if we come back to him, too."

Earlier casting reports already mentioned celebrities like Margaret Cho, Neil DeGrasse Tyson, Kathryn Hahn, Kyle Chandler and Jeff Garlin coming over to Peter Griffin's turf.

Furthermore, "Saturday Night Live" star Kate McKinnon would also be lending her voice as Peter's sister. The character was described by The Hollywood Reporter (via IBT) as a "professional female wrestler who goes by the wrestling name Heavy Flow."

Creator Seth MacFarlane and the rest of the people working behind the camera revealed during the San Diego Comic-Con some of the exciting plotlines for Season 14. These include Chris becoming a registered sex offender, Quagmire a Korean soap opera actor, and an episode that happens inside Stewie's sleeping mind.

"Family Guy" returns to Fox on September 27.