Full Breakdown
HBO Max Greenlights “Adventure Time: Bubblegum and Marceline” – A 10-Episode Straight-to-Series Order
6/24/2026, 8:13:03 PM
New Spinoff Receives Straight-to-Series Order
At the Warner Bros. Animation showcase during the Annecy International Animation Film Festival, HBO Max announced a straight-to-series order for “Adventure Time: Bubblegum and Marceline.” The order comprises 10 episodes that will be produced in partnership with Cartoon Network Studios and Hanna-Barbera Studios Europe. The series will follow Princess Bubblegum and Marceline the Vampire Queen as they travel across the farthest reaches of Ooo, encountering both familiar faces and new dangers.
Franchise Context and Recent Expansions
“Adventure Time” originally aired from 2010 to 2018 on Cartoon Network. Since the series finale, the universe has expanded through the specials “Adventure Time: Distant Lands” (2020-2021), the series “Adventure Time: Fionna and Cake” (2023-2025), and the upcoming “Adventure Time: Side Quests” on Disney+ / Hulu. The new spinoff continues this trend of long-form storytelling, positioning Bubblegum and Marceline—whose romantic relationship was confirmed in the 2018 finale—as the central duo for the next chapter.
Key Creative Personnel and Production Partners
- Adam Muto – Emmy-winning veteran of the franchise; serves as showrunner and executive producer.
- Fred Seibert – Longtime “Adventure Time” producer; executive producer.
- Sam Register – President of Warner Bros. Animation, Cartoon Network Studios, and Hanna-Barbera Studios Europe; executive producer.
- Amy Gravitt – Executive Vice President, HBO & HBO Max Comedy Programming, overseeing the partnership.
The series is being developed under the joint banner of Warner Bros. Animation, Cartoon Network Studios, and Hanna-Barbera Studios Europe, with HBO Max handling distribution.
Official Statements from HBO Max and Warner Bros. Animation
HBO Max’s Amy Gravitt expressed enthusiasm for the project, noting the studio’s confidence in Muto’s creative vision and the collaborative relationship with Cartoon Network Studios. Warner Bros. Animation’s Sam Register highlighted the franchise’s enduring inventiveness and the strategic aim to expand the “Adventure Time” universe alongside HBO Max. Both statements underscore the series as a continuation of the successful formula established by prior spinoffs such as “Fionna and Cake.”
Verbatim Quotes
- “We can’t wait to see where Adam’s boundless imagination takes us in this new series. It’s such a joy to go on another ‘Adventure Time’ journey with our friends and partners at Cartoon Network Studios,” — Amy Gravitt, EVP, HBO & HBO Max Comedy Programming
- “’Adventure Time’ remains one of the most inventive and beloved worlds in animation. Alongside our partners at HBO Max, we’re thrilled to continue expanding that universe with Adam and his incredibly talented team.” — Sam Register, President, Warner Bros. Animation, Cartoon Network Studios, Hanna-Barbera Studios Europe
- “Continuing in the spirit of ‘Fionna & Cake,’ I’m excited that the next ‘Adventure Time’ series will feature two more of my favorite characters: Bubblegum & Marceline,” — Adam Muto, Showrunner, “Adventure Time: Bubblegum and Marceline.”
- “It’s been a fantastic opportunity to revisit old friends and build onto the world of ‘Adventure Time.’” — Adam Muto, Showrunner
Conflicting Reports and Unresolved Details
Sources confirm the series is in the writing stage, but no official word has been given regarding the involvement of original voice actors Hynden Walch (Princess Bubblegum) and Olivia Olson (Marceline). This gap leaves uncertainty about casting continuity for longtime fans.
What’s Next
The production team is currently drafting scripts, with no release date announced. As the franchise continues to generate new content across multiple platforms, the upcoming spinoff is expected to further solidify “Adventure Time” as a multi-generational animated property. Future announcements may reveal casting decisions, premiere windows, and additional promotional details.
