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Foundation Season 3 Is Complete: Release Date, Cast, Story, Ending & Season 4

Foundation Season 3 premiered July 11, 2025 and concluded September 12 with 10 weekly episodes. Here is the confirmed cast, Mule-centered story, spoiler section, Asimov book connection and Season 4 status.
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Foundation Season 3 has already premiered and finished. The 10-episode season debuted on Apple TV+ on July 11, 2025, released one episode weekly on Fridays, and concluded on September 12, 2025. It is currently available to watch through Apple TV+, subject to regional availability and the service’s current subscription terms.

The season jumps forward 152 years after Season 2 and brings the expanding Foundation, a declining Galactic Empire and the Mule into an uneasy alliance. Apple renewed Foundation for Season 4 on September 11, 2025, but no official premiere date has been announced.

Foundation Season 3 at a glance

Question Confirmed answer
Status Released and complete
Premiere date Friday, July 11, 2025
Finale date Friday, September 12, 2025
Episode count 10 episodes
Release pattern One episode weekly on Fridays
Streaming platform Apple TV+
Time jump 152 years after the events of Season 2
Central threat The Mule, a warlord who uses force, military power and mental influence
Season 4 Renewed, but without an announced release date

Older articles describing Season 3 as an upcoming project are now out of date. The season is no longer waiting for a premiere or finale; viewers can watch the complete story on Apple TV+.

What is Foundation Season 3 about?

Season 3 begins 152 years after the events of Season 2. During that time, the Foundation has grown far beyond its early beginnings, while the Cleonic Dynasty and the wider Empire have continued to weaken. Those opposing powers are forced into an uneasy alliance when a new existential danger appears.

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That danger is the Mule, a warlord seeking control of the universe through physical force, conventional military power and mind control. The official premise places Hari Seldon, Gaal Dornick, the Cleons and Demerzel at the center of the conflict as their political and personal interests collide.

The season continues Foundation’s main argument about whether history can be predicted and managed. The Foundation represents an expanding institution trying to shape the future; Empire represents a decaying system attempting to preserve its authority; and the Mule challenges the assumptions behind psychohistory by introducing an individual whose influence can disrupt the expected course of events.

That is the safest spoiler-free description of the story: a growing Foundation and a declining Empire must cooperate against a threat that cannot be handled by ordinary political calculations alone.

Foundation Season 3 cast

Returning principal cast

Actor Character
Jared Harris Hari Seldon
Lee Pace Brother Day and the Cleonic Emperor line
Lou Llobell Gaal Dornick
Leah Harvey Salvor Hardin
Laura Birn Demerzel
Terrence Mann Brother Dusk
Cassian Bilton Brother Dawn

These characters remain the most important anchors for viewers returning from Season 2. The continuing presence of Hari, Gaal, the Cleons and Demerzel also keeps the show’s three major storylines connected: psychohistory, the future of the Foundation and the survival of Imperial power.

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New and expanded Season 3 cast

Actor Season 3 role
Pilou Asbæk The Warlord, the figure tied to the Mule threat in the season’s setup
Cherry Jones Foundation Ambassador Quent
Synnøve Karlsen Bayta Mallow
Cody Fern Toran Mallow
Brandon P. Bell Han Pritcher
Tómas Lemarquis Magnifico Giganticus
Yootha Wong-Loi-Sing Song
Leo Bill Mayor Indbur
Alexander Siddig Season 3 role announced by Apple and Skydance materials
Troy Kotsur Season 3 role announced by Apple and Skydance materials

The eight additions announced as series regulars were Cherry Jones, Pilou Asbæk, Synnøve Karlsen, Cody Fern, Brandon P. Bell, Tómas Lemarquis, Yootha Wong-Loi-Sing and Leo Bill. Apple’s later Season 3 photocall material also identified Alexander Siddig and Troy Kotsur among the season’s new or featured cast, although the core announcement materials reviewed here do not specify their roles.

Cast databases can combine historical, recurring and current credits. For that reason, the list above focuses on actors and roles identified in Apple or Skydance materials rather than treating every name attached to the wider series as a Season 3 regular.

Foundation Season 3 release schedule

Apple ordered 10 episodes and released them weekly rather than dropping the season all at once:

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Event Date
Season 3 premiere Friday, July 11, 2025
Weekly rollout Fridays on Apple TV+
Episode 10 and finale Friday, September 12, 2025

The finale is Episode 10, titled The Darkness. The reviewed official schedule confirms the dates and episode count, but not a complete list of episode titles.

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Season 3 ending explained in broad terms

Spoiler warning: The following section discusses the broad outcome described in the official finale synopsis.

By the finale, Gaal and the Second Foundation take the fight directly to the Mule. At the same time, the Imperial order suffers a catastrophic blow, leaving the balance among the Foundation, the Second Foundation and Empire substantially rearranged.

The ending therefore functions as a major shift in the show’s power structure rather than a simple resolution to the Mule storyline. It changes the position of the institutions and characters that have driven the series so far, while leaving the larger struggle over humanity’s future open for the renewed fourth season.

The official finale summary supports that broad description. It should not be used to infer every character’s fate, identity reveal or the precise mechanics of the Mule’s abilities. Those details require a full episode recap or cast and creator interviews, rather than pre-release promotional material.

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How Season 3 connects to Isaac Asimov’s books

Foundation is an adaptation of Isaac Asimov’s stories, not a scene-by-scene television reproduction of the novels. Season 3 draws especially on ideas, characters and conflicts associated with Foundation and Empire and Second Foundation, but the show substantially reworks chronology, character identities and plot structure.

Apple’s Season 3 renewal announcement specifically highlighted the Mule and named Bayta, Toran, Ebling and Magnifico Giganticus as characters connected with the season’s expansion of Asimov’s universe. The television versions should still be treated as show adaptations. A name appearing in both works does not guarantee that the character has the same history, relationships or role.

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If the Mule is what brought you to the books, Foundation and Empire by Isaac Asimov is the most direct reading companion. It is particularly relevant to the literary material that Season 3 is drawing on, but reading it will not provide a literal episode-by-episode guide to the television season.

For readers who would rather start with the complete original sequence, the Foundation 3-Book Boxed Set brings together Foundation, Foundation and Empire and Second Foundation. The trilogy is useful context, but it is not required to understand the show, and viewers should expect major differences in chronology and characterization.

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A companion for the television production

Viewers more interested in the series’ visual design than its literary source may also encounter Foundation: The Art and Making of Seasons 1 & 2. It is an official companion focused on the first two seasons, including production design, costumes and behind-the-scenes material; it is not a Season 3 guide.

Who makes Foundation?

Foundation is produced for Apple by Skydance Television. David S. Goyer is the showrunner and an executive producer associated with the Season 3 materials, while Robyn Asimov is among the series’ executive producers. Apple describes the program as an adaptation of Isaac Asimov’s award-winning stories.

Season 3 production was affected by the broader 2023 writers’ and actors’ strikes and by production delays. The official renewal, casting and release announcements establish the season’s eventual dates but do not provide a complete chronology of those delays. Claims about the precise causes or timeline of production should therefore be treated separately from the confirmed release information.

Where to watch Foundation Season 3

All 10 episodes are available through Apple TV+. The service’s pricing, free-trial terms, supported devices and availability can vary by country and can change over time, so viewers should check the current Apple TV+ offering in their region before subscribing.

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No official Season 3 DVD or Blu-ray release was established in the reviewed material. The confirmed viewing destination is the Apple streaming service.

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Foundation Season 4: what has been confirmed?

Apple renewed Foundation for Season 4 on September 11, 2025, one day before the Season 3 finale. That renewal confirms that the series is continuing, but the reviewed official materials do not announce a premiere date, release year or complete Season 4 story.

Accordingly, predictions that Season 4 will arrive in a particular year should not be presented as confirmed information. The most accurate current update is simple: Season 4 is renewed, while its release timing remains unannounced.

What is confirmed—and what is not

  • Confirmed: Season 3 premiered July 11, 2025.
  • Confirmed: The season contains 10 episodes and concluded September 12, 2025.
  • Confirmed: The story jumps 152 years beyond Season 2 and centers on the Mule threat.
  • Confirmed: The returning and new cast listed above were identified in Apple or Skydance materials.
  • Confirmed: Apple renewed the series for Season 4 on September 11, 2025.
  • Not confirmed in the reviewed material: A Season 4 premiere date or release year.
  • Not established in the reviewed material: An official Season 3 DVD, Blu-ray or physical-media release.
  • Not safe to assume: That the television plot follows Foundation and Empire or Second Foundation exactly.

Frequently Asked Questions

Is Foundation Season 3 out now?

Yes. All 10 episodes were released on Apple TV+, with the premiere on July 11, 2025 and the finale on September 12, 2025.

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How many episodes are in Foundation Season 3?

Season 3 has 10 episodes, released weekly on Fridays.

Who is the Mule in Foundation Season 3?

The Mule is the season’s central existential threat: a warlord seeking control through physical force, military power and mental influence. Pilou Asbæk was announced as the Warlord connected with that threat.

Is Foundation Season 4 confirmed?

Yes. Apple renewed the series on September 11, 2025. No official Season 4 premiere date or release year has been announced in the reviewed materials.

Do I need to read Isaac Asimov’s books before watching Season 3?

No. The series is designed as an adaptation rather than a literal retelling. Foundation and Empire and Second Foundation provide useful literary context, but the television series changes chronology, character identities and plot structure.

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Where can I watch Foundation Season 3?

The complete season is available on Apple TV+. Subscription pricing and availability vary by country and may change.

The Bottom Line

The current answer is no longer a prediction: Foundation Season 3 is complete, with all 10 episodes available on Apple TV+. It expands the story 152 years after Season 2, introduces the Mule as the central threat, draws on ideas from Asimov’s later Foundation novels and leaves the series positioned for a renewed Season 4. The next season is confirmed, but its release date is not.

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