The BEST episodes of Adventure Time season 9

Every episode of Adventure Time season 9, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Adventure Time season 9!

Adventure Time follows two best friends: Finn (a 12-year old boy) and Jake (a wise 28-year-old dog with magical powers), and the surreal adventures undertaken by the duo as they traverse the mystical Land of Ooo. A world built for adventure, Ooo is filled to the brim with various landscapes for the two buddies to explore and bizarre characters to assist.

Last Updated: 6/14/2024Network: Cartoon NetworkStatus: Ended
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Three Buckets
star
8.46
438 votes

#1 - Three Buckets

Season 9 - Episode 14 - Aired 7/21/2017

Fern reveals his ability to change his appearance to look just like Finn. Impressed, Finn joins Fern to a dungeon hidden away in a mountain.

Watch Now:Amazon
Elements: Bespoken For (2)
star
8.32
565 votes

#2 - Elements: Bespoken For (2)

Season 9 - Episode 3 - Aired 4/24/2017

Ice King explains what happened while Finn and Jake were away.

Directors: Elizabeth Ito
Watch Now:AmazonApple TV
Elements: Skyhooks II (8)
star
8.23
461 votes

#3 - Elements: Skyhooks II (8)

Season 9 - Episode 9 - Aired 4/27/2017

Ice King accidentally causes Betty to get transported to Mars. Lumpy Space Princess rescues Finn.

Directors: Cole Sanchez
Watch Now:AmazonApple TV
Whispers
star
8.08
417 votes

#4 - Whispers

Season 9 - Episode 13 - Aired 7/20/2017

Finn and Fern encounter Sweet P, who was running away from home after having a nightmare.

Watch Now:Amazon
Elements: Winter Light (3)
star
7.96
490 votes

#5 - Elements: Winter Light (3)

Season 9 - Episode 4 - Aired 4/25/2017

Finn, Jake and Ice King travel to the Ice World and break through the large ice dome covering the center of the land.

Directors: Cole Sanchez
Watch Now:AmazonApple TV
Abstract
star
7.93
408 votes

#6 - Abstract

Season 9 - Episode 10 - Aired 7/17/2017

After Jake has a bizarre dream about Jermaine painting abstract art, he decides to go look for him.

Watch Now:AmazonApple TV
Ketchup
star
7.93
401 votes

#7 - Ketchup

Season 9 - Episode 11 - Aired 7/18/2017

Marceline is unexpectedly visited by BMO, and asks BMO to download a USB drive.

Watch Now:AmazonApple TV
Elements: Skyhooks (1)
star
7.91
542 votes

#8 - Elements: Skyhooks (1)

Season 9 - Episode 2 - Aired 4/24/2017

Finn, Jake and BMO return to Ooo and discover that the entire kingdom has been drastically transformed.

Directors: Cole Sanchez
Watch Now:Apple TV
Elements: Cloudy (4)
star
7.90
483 votes

#9 - Elements: Cloudy (4)

Season 9 - Episode 5 - Aired 4/25/2017

Jake tucks him and himself into a cloud.

Directors: Elizabeth Ito
Watch Now:Apple TV
Elements: Hero Heart (7)
star
7.90
455 votes

#10 - Elements: Hero Heart (7)

Season 9 - Episode 8 - Aired 4/27/2017

Lumpy Space Princess chases Finn. Ice King and Betty try to intervene.

Directors: Elizabeth Ito
Watch Now:Apple TV
Elements: Happy Warrior (6)
star
7.88
457 votes

#11 - Elements: Happy Warrior (6)

Season 9 - Episode 7 - Aired 4/26/2017

Finn, Lumpy Space Princess, and Gunter arrive in Fire Kingdom.

Directors: Cole Sanchez
Watch Now:Apple TV
Orb
star
7.72
572 votes

#12 - Orb

Season 9 - Episode 1 - Aired 4/21/2017

Finn, Jake and BMO take a nap. A mysterious black orb in the sky begins to subject the three to strange dreams that quickly become nightmarish.

Directors: Elizabeth Eto
Watch Now:Apple TV
Elements: Slime Central (5)
star
7.62
479 votes

#13 - Elements: Slime Central (5)

Season 9 - Episode 6 - Aired 4/26/2017

Finn and Jake arrive in Slime Kingdom.

Directors: Elizabeth Ito
Watch Now:Apple TV
Fionna and Cake and Fionna
star
7.45
390 votes

#14 - Fionna and Cake and Fionna

Season 9 - Episode 12 - Aired 7/19/2017

At a Fionna and Cake book reading by Ice King, an old woman claiming to be Fionna arrives with a tape of an early Fionna and Cake adventure. Ice King is enamored and invites her to stay with him.