: Pendleton Ward (remained as a writer and artist after stepping down as showrunner in earlier seasons) Supervising Directors : Cole Sanchez and Elizabeth Ito
A major developmental pillar of Season 9 was the eight-part miniseries .
: While design and coloring happened in California, the actual animation was handled in South Korea by Rough Draft Korea or Saerom Animation . The "Elements" Miniseries Adventure Time - Season 9
: Developed by head writer Kent Osborne , showrunner Adam Muto , Jack Pendarvis , and Julia Pott .
: The writing continued to blend classic fantasy tropes—inspired by Dungeons & Dragons —with complex emotional themes. Key Creative Staff Showrunner : Adam Muto : Pendleton Ward (remained as a writer and
: Finn is approximately 16 or 17 years old during this season, reflecting the show's real-time aging of its protagonist.
: Sandra Lee served as the art director for this arc, which featured guest animation and specialized background designs by former lead designer Ghostshrimp . Narrative & Character Development : The writing continued to blend classic fantasy
: These outlines were expanded into full storyboards by artists like Sam Alden , Polly Guo , and Steve Wolfhard . The storyboarders were responsible for writing the dialogue and physical action, making them the primary "writers" of the series.