Watch Adventure Time Season 3 online
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Episodes
1. The Conquest of Cuteness
Finn and Jake must defend their home from the Cuties, a tiny race who believe themselves to be evil, destructive invaders.
2. Morituri te Salutamus
The duo choose to partake in gladiatorial combat against the Fight King's ghost warriors, but Finn succumbs to blood-lust while Jake becomes obsessed in keeping a cool morale.
3. Memory of a Memory
Finn and Jake enter Marceline's mind to awaken her from a sleep spell she had cast on herself, without knowing that they are being tricked by a person from her past.
4. Hitman
The grounded Ice King hires a fire-manipulating hitman to hit Finn and Jake, without realizing the potentially deadly consequences.
5. Too Young
The Earl of Lemongrab takes over the Candy Kingdom due to Princess Bubblegum's age regression, forcing her and Finn to try and get rid of him even if it means a life-altering decision.
6. The Monster
The king and queen of Lumpy Space ask Finn and Jake to bring their daughter back home. At the same time, they attempt to stop a "monster" from destroying a village.
7. Still
Ice King freezes Finn and Jake with a potion so he can force them to befriend him.
8. Wizard Battle
Finn and Jake enter a competition for wizards in disguise so they can prevent Ice King from winning the grand prize: a kiss from Princess Bubblegum.
9. Adventure Time with Fionna and Cake
Fionna (the gender-swapped version of Finn) puts up with the sudden courtship of Prince Gumball (the gender-swapped version of Princess Bubblegum) while taking advice from her partner Cake (the gender-swapped version of Jake) in dealing with guys.
10. What Was Missing
Finn, Jake, BMO, Marceline, and Princess Bubblegum must come together and play music as a genuine band in order to open the gate of the Door Lord and retrieve their stolen items.
11. Apple Thief
When Tree Trunks' apples go missing, she, Finn and Jake descend into the dark side of the Candy Kingdom in order to find the thief.
12. The Creeps
Finn, Jake, and some friends attend a dinner with a mysterious host. However, the host then reveals himself as a murderous ghost that will possess the body of one guest to kill everyone else. The night turns from a masquerade party into a terrifying whodunit as the guests start to get murdered one by one.
13. From Bad to Worse
When another plague of Candy Zombies arises and Princess Bubblegum is among the undead, Finn and his friends are in a race against time to figure out how to stop it... but things get worse by the minute.
14. Beautopia
Susan Strong returns and asks Finn and Jake to help fight off the Lub Glubs and regain her people's home in Beautopia.
15. No One Can Hear You
Finn and Jake stop an unearthly stag when Finn finds that his legs are broke, Jake has gone crazy, and all the Candy People are missing.
16. Jake vs. Me-Mow
Me-Mow, a tiny assassin cat, hides in Jake's nose and orders him to kill Wildberry Princess or face death by injecting poison.
17. Thank You
A Snow Golem takes in a lost Fire Wolf pup and tries to take care of it, while Finn and Jake try to break open the Ice King's suit of ice armor for taking their sandwiches.
18. The New Frontier
Finn tries to stop Jake from embracing a dream that he believes foretells his final demise.
19. Holly Jolly Secrets Part I
In Finn and Jake's holiday special, the heroes come across a video diary of the Ice King's and attempt to decipher its secrets.
20. Holly Jolly Secrets Part II
In part two of the holiday special, The Ice King tries to get his video diary back from Finn and Jake.
21. Marceline's Closet
Finn and Jake play Cloud Hunt in Marceline's house, but they get trapped in her closet after she comes home.
22. Paper Pete
Finn tries to resolve a secret library war between the Pagelings and the Moldos.
23. Another Way
When Clown Nurses make Finn uncomfortable, Finn ignores all options except his own when he decides to get cyclops tears to heal his and Jake's broken toes.
24. Ghost Princess
Finn and Jake head into Ghost Princess' Cemetery to find the cause of her death while she finds true love, ultimately revealing her tragic past.
25. Dad's Dungeon
Jake feels conflicted when his father forces him to try and hold Finn back in a dungeon meant to toughen Finn up.
26. Incendium
Trying to help Finn get over his hopeless feelings for Princess Bubblegum, Jake sets out to find a new princess for Finn to go out with.