Series

Watch Leviathan (2025) Online

6.213 votes2025TV-14EndedAnimationAction & AdventureSci-Fi & FantasyOfficial site

Synopsis

Set in an alternate steampunk past, an Austrian fugitive prince and a Scottish airman in disguise embark on an unexpected quest to prevent a world war.

Episodes

Season 1

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1. Into the StormNow viewing2025-07-1025m6.01914. Prince Alek of Austria-Hungary goes on an unusual practice session in a Stormwalker. In Edinburgh, Sharp eagerly takes flight in a Huxley.
2. Prelude to War2025-07-1028m6.0As Europe teeters on the edge of an all-out war, Alek struggles with his new life in hiding. Sharp gets acquainted with the Leviathan and its crew.
3. Clankers and Darwinists2025-07-1028m6.0Alek learns why he's hunted and, despite Volger's advice, sneaks out to aid the Leviathan's crew. He saves Sharp, who doesn't buy the prince's story.
4. The Weight of the Past2025-07-1023m6.0With Clanker forces hot on their tail, the wounded Leviathan needs a miracle to get off the ground. Alek makes an offer the Darwinists can't refuse.
5. Far to the East2025-07-1023m6.0The Leviathan encounters a deadly Clanker weapon on its journey towards Istanbul. Upon arriving in the city, Alek and his comrades make plans to escape.
6. Shadows of Istanbul2025-07-1028m6.0Sharp and Dr. Barlow finally meet the Sultan, hoping to smooth things over with a rare gift. Meanwhile, a mysterious girl saves Alek from a German patrol.
7. Stormy Seas2025-07-1026m6.0A patrol jeopardizes the British secret operation, forcing Sharp to flee into Istanbul's streets. Alek commits himself to the revolutionary army's cause.
8. Behemoth2025-07-1025m4.0On the day of the coup, Alek urges Klopp to leave for his safety. Later, unexpected news forces the revolutionaries to act before the Behemoth arrives.
9. Tunguska2025-07-1022m7.0The Leviathan and its crew arrive in Siberia to meet Barlow's uncle. He reveals the source behind numerous mysterious phenomena around the world.
10. Truth and Lies2025-07-1025m6.0Tensions run high after Alek learns the truth about his friend. But before they can talk things over, Sharp gets into a dangerous predicament.
11. Goliath2025-07-1023m7.0Determined to uncover the truth about Tunguska, Alek and Sharp confront Tesla and learn about the invention responsible for the destruction: the Goliath.
12. Under the Same Sky2025-07-1029m6.0Tesla issues a deadly ultimatum as a last resort. Can Sharp and Alek, stuck on opposing sides, prevent the conflict from escalating before it's too late?

Cast

Top Billed Cast

Ayumu Murase
Prince Aleksandar (voice)
Natsumi Fujiwara
Sharp (voice)
Shunsuke Sakuya
Count Volger (voice)
Yasuhiro Mamiya
Klopp (voice)
Mie Sonozaki
Dr. Nora Barlow (voice)
Ivan Shibata
Newkirk (voice)
Fairouz Ai
Lilit (voice)
Hiroki Touchi
Nikola Tesla (voice)
Ikuko Tani
Nene (voice)
Genta Nakamura
Hoffman (voice)
Daichi Hayashi
Rigby (voice)
Satoshi Niwa
Matthews (voice)
Naoto Kobayashi
Thomas (voice)

Availability

Where To Watch Legally

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FAQ

Frequently Asked Questions

Is Leviathan available to watch online?

Yes - see the "Where to watch legally" section on this page for streaming, rental and purchase options.

How many seasons does Leviathan have?

Leviathan has 1 season and 12 episodes.

When did Leviathan first air?

Leviathan first aired in 2025.

Is Leviathan still running?

Leviathan's status on TMDB is: Ended.

What genre is Leviathan?

Leviathan is classified as Animation, Action & Adventure, Sci-Fi & Fantasy.