9: Adventure Time - Season

Season 9 leaned heavily into established lore and character maturity:

: Finn is approximately 16 or 17 years old during this season, reflecting the show's real-time aging of its protagonist. Adventure Time - Season 9

: Developed by head writer Kent Osborne , showrunner Adam Muto , Jack Pendarvis , and Julia Pott . Season 9 leaned heavily into established lore and

: 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 showrunner Adam Muto