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The Righteous Gemstones Season 4: Every New Guest Star And Returning Cast Member For The Final Chapter

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The Gemstone family is returning to the pulpit for one last, glorious, and certainly chaotic season. As of December 10, 2025, the anticipation for the fourth and final season of HBO's hit dark comedy, The Righteous Gemstones, is reaching a fever pitch, with an explosive lineup of new guest stars ready to challenge the prosperity gospel empire. Creator and star Danny McBride has promised an ending that will make the storylines and characters feel "whole and complete," but not before introducing a fresh wave of antagonists and eccentric personalities to the Gemstone Salvation Center. The final chapter is set to premiere in March 2025, bringing the saga of Eli, Jesse, Judy, and Kelvin to a dramatic conclusion, heavily influenced by the new faces joining the cast.

The biggest news surrounding the upcoming season is the addition of several high-profile actors, including a trio of comedy and action veterans who will play a new, formidable family unit. These guest stars are not just cameo appearances; they are set to become central figures, specifically the Milsap family, who will serve as the primary antagonists and a dark mirror to the Gemstones' own brand of Christian celebrity. Fans should prepare for a nine-episode finale that promises the show's signature blend of biting satire, family dysfunction, and high-stakes crime.

The New Cast of Antagonists: The Milsap Family and Other Guest Stars

Season 4 introduces a new group of characters who are poised to cause maximum disruption to the Gemstone megachurch dynasty. The most significant additions revolve around the Milsap family, a group with deep, complex, and potentially dangerous ties to the Gemstones’ past. These actors bring immense star power and a proven track record for playing both comedic and menacing roles, ensuring the final season’s conflict is the most compelling yet.

The Milsap Family: A New Threat to the Gemstones' Empire

  • Michael Rooker as Cobb Milsap: The most significant new guest star is Michael Rooker, known for his intense roles in The Walking Dead and Guardians of the Galaxy. Rooker plays Cobb Milsap, the ex-husband of Lori Milsap and a former family friend of the Gemstones. Cobb Milsap is positioned to be the main villain of Season 4, a character far more menacing and psychotic than previous antagonists. His history with the Gemstones, particularly Eli, is expected to drive the central conflict, potentially exposing long-buried secrets that could shatter the family's image.
  • Megan Mullally as Lori Milsap: Comedy legend Megan Mullally joins the cast as Lori Milsap. Lori is Cobb Milsap's ex-wife and a key figure in the season's storyline. Given Mullally's talent for sharp, eccentric characters, Lori Milsap is likely to be a complicated figure—perhaps a victim, a co-conspirator, or a new rival for the Gemstone women. Her connection to the main antagonist and the family's past will be crucial to the plot's unfolding.
  • Seann William Scott as Corey Milsap: Seann William Scott, best known for the American Pie franchise, steps into the role of Corey Milsap. Corey is the son of Lori and Cobb Milsap. His character is expected to be deeply entangled in the chaos his parents bring, possibly serving as a foil or a pawn in the larger Milsap scheme against the Gemstones. Scott's casting suggests a character who balances genuine menace with the show’s signature dark humor.
  • Arden Myrin as Jana Milsap: Comedian Arden Myrin, known for her work on MADtv, plays Jana Milsap, who is Corey Milsap’s wife. As the wife of the Milsap son, Jana will likely be drawn into the family's escalating feud with the Gemstones, providing another layer of domestic chaos to the season’s narrative.

Surprise Guest Star and Returning Favorites

Beyond the Milsap saga, the final season is set to feature other notable guest appearances, including a surprising appearance by a major Hollywood star in a special episode.

  • Bradley Cooper: An early report indicated that Hollywood star Bradley Cooper, along with a former The Walking Dead alum, is set to appear in the first episode of Season 4, which is rumored to be a special "Interlude" prequel episode. These "Interlude" episodes have historically provided crucial backstory for characters like Eli Gemstone and Baby Billy Freeman, and a prequel episode featuring new faces suggests a deep dive into the Gemstones' early days or the origins of the Milsap conflict.
  • The Returning Ensemble: While the focus is on the new faces, the show's core strength remains its stellar ensemble. Fans can look forward to the return of the entire main cast, including Danny McBride (Jesse Gemstone), John Goodman (Eli Gemstone), Adam DeVine (Kelvin Gemstone), Edi Patterson (Judy Gemstone), Cassidy Freeman (Amber Gemstone), and the iconic Walton Goggins (Baby Billy Freeman). The return of Tony Cavalero as Keefe Chambers and Valyn Hall as Tiffany Freeman also guarantees that the show's most beloved recurring characters will be back for the final ride.

The Final Chapter: Plot Theories and Release Date

The announcement that Season 4 will be the final season has put the entire series into a new perspective, promising a definitive conclusion to the Gemstone family's journey through televangelism, greed, and redemption. The introduction of the Milsap family suggests that the final episodes will force the Gemstones to confront the consequences of their past actions and their often-unscrupulous business practices.

What to Expect from the Season 4 Storyline

The central conflict of Season 4 is clearly tied to the Milsap family, particularly Cobb Milsap, who is described as a main villain. Plot rumors and character details point to a confrontation that is both personal and professional. Given Cobb's history as a "former family friend" and his ex-wife Lori's involvement, the storyline is likely to focus on:

  • The Unraveling of the Past: The Milsaps may hold damning information about the Gemstones' rise to power, potentially involving the late Aimee-Leigh Gemstone or Eli's early career. This could force the family to band together against an external threat while simultaneously dealing with their own internal power struggles.
  • The Fate of the Megachurch: With a new major antagonist, the financial and spiritual future of the Gemstone Salvation Center is likely at stake. Will the family finally face public scrutiny that their wealth and influence can't buy their way out of?
  • Character Arcs: The final season is expected to provide satisfying conclusions for the main siblings. Will Jesse Gemstone finally step up as the true patriarch? Will Judy Gemstone and B.J. finally find a stable, if still eccentric, partnership? Will Kelvin Gemstone and Keefe Chambers find a new purpose for the youth ministry? And what is the fate of Baby Billy Freeman and his new TV project?

The Righteous Gemstones Season 4 Premiere Date and Final Episodes

Fans won't have to wait long to see the final chapter unfold. HBO has confirmed that The Righteous Gemstones Season 4 will premiere in March 2025 on HBO and the Max streaming service. While some sources have pinpointed the exact date as Sunday, March 9th, the important takeaway is that the final nine-episode season is imminent, bringing the saga to a close.

The finale promises to be a spectacular, over-the-top conclusion, staying true to the show's unique blend of high-octane comedy and intense family drama. With the addition of powerhouse guest stars like Michael Rooker, Megan Mullally, and Seann William Scott, Season 4 is set to deliver the most memorable and explosive send-off in the series' run. Prepare your prayer hands and your wallets, because the Gemstones are coming back for one last offering.

righteous gemstones cast season 4 guest stars
righteous gemstones cast season 4 guest stars

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