What is the Adventure Time: Fionna and Cake series about?

The Adventure Time spinoff series follows the alternate universe versions of Finn and Jake, Fionna and Cake, as they embark on a multiverse-hopping journey towards self-discovery.

Who are the main characters in Fionna and Cake?

The series features Fionna and her sidekick Cake, as well as appearances from other familiar Adventure Time characters like Marshall Lee, Marceline the Vampire Queen, and Princess Bubblegum.

When will the Fionna and Cake series premiere?

The ten-episode first season of Adventure Time: Fionna and Cake will premiere on HBO Max on October 23, 2025, with new episodes airing weekly through December 25.

Home / Arts and Entertainment / Fionna and Cake Tackle Multiverse Mayhem in New HBO Max Series

Fionna and Cake Tackle Multiverse Mayhem in New HBO Max Series

12 Oct

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Summary

Fionna and Cake seek help from former Ice King Simon Petrikov
Huntress Wizard embarks on a desperate quest with fatal consequences
Voice cast includes Madeleine Martin, Roz Ryan, and Ashly Burch

Fionna and Cake Tackle Multiverse Mayhem in New HBO Max Series

In the upcoming HBO Max series, Adventure Time: Fionna and Cake, viewers will be transported to the land of Ooo and introduced to the alternate universe versions of the beloved characters. Premiering on October 23rd, the ten-episode first season follows Fionna and her sidekick Cake as they find themselves in the crosshairs of a powerful new foe, forcing them to seek the help of former Ice King Simon Petrikov.

As Fionna and Cake tackle new adventures after their multiverse-hopping journey, the series also features the storyline of Huntress Wizard embarking on a desperate quest with fatal consequences. Fans can expect to see familiar faces like Marshall Lee, Marceline the Vampire Queen, and Princess Bubblegum, with a voice cast that includes Madeleine Martin, Roz Ryan, and Ashly Burch, among others.