Come Along With Me

It will be the final episode of Season 9 and the series, and the episode will be equivalent to four episodes time-wise.

Characters

 * Finn
 * Jake
 * Princess Bubblegum
 * Marceline
 * Gumbald
 * Lolly
 * Chicle/Crunchy
 * Green Knight/Fern
 * Banana Guards
 * Ice King
 * Ricardio
 * Bandit Princess
 * Peace Master
 * Me-Mow
 * Samantha
 * Pete Sassafras
 * Ash
 * Sir Slicer
 * Scorcher
 * Squirrel
 * Gunter
 * GOLB
 * Flame Princess
 * Huntress Wizard
 * Lumpy Space Princess
 * BMO
 * Lady Rainicorn
 * Slime Princess
 * Duke of Nuts
 * Lemongrab
 * Gumball Guardian
 * Peppermint Butler
 * Candy People
 * Betty Grof
 * King Man
 * Snail

Episode connections

 * Slime Princess's helmet heavily resembles the one worn by Slimy D from "Evergreen."
 * This is the first appearance of the Duke of Nuts since season 1. Despite Princess Bubblegum's hatred for him, he appears to be fighting on her side of the war.

Production notes

 * This episode is the series finale of Adventure Time.
 * This episode is the longest episode of the show with a length of 44 minutes.
 * The teaser of the episode refers to it as "The Ultimate Adventure".
 * The title of this episode is derived from the Adventure Time ending theme: