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B-Mo's origin story.
The guys meet a wish master after following the Lich through the portal.
Finn gains powers from the Ice King's crown.
The Ice King and Marceline 996 years ago.
Finn fights off a deer that was licking one of the candy people, but this deer knocks both him and Jake out. While Finn's lower body is now in a cast, Jake's head is so badly hurt that he believes it's his birthday and that everyone is hiding from him in preparation for a surprise party, when this isn't actually the case.moreless
Finn and Jake play the epic game Card Quest.
When Finn finds a porcelain lamb, it transports him into the spirit world and only the Ice King can help get him out!
Ooo's secrets are revealed during a visit from the Lich King.
Bubblegum may be jealous when Finn starts hanging out with Flame Princess.
Finn has a particularly vivid dream, and all of Ooo is in it.
Marceline tells a story about Fionna and Cake to show the Ice King how it's done.
Ice King, NEPTR, Tree Trunks, Shelby and Lemongrab must work together to escape a dungeon.
Short tales about Finn and Jake's thumbs, Marceline's search for a music shop and the Ice King's new bride.
What Was Missing is the tenth episode in season three of Adventure Time. To defeat the Door Lord, Jake, Finn, Marceline, and Princess Bubblegum must work together and form a band. They take him on with Finn beatboxing, Jake playing the viola, Marceline playing the bass guitar and Princess Bubblegum playing Beemo and singing.moreless
While eating pies at Princess Wildberry's place, Finn and Jake discover a tiny cat with intentions to murder. This cat, named Me-Mow, poisons Jake and threatens to kill him with the rest of the poison, unless he kills the princess.
The guys challenge a monster to a fight but end up battling each other.
The Earls of Lemongrab send a distress message, and Finn and Jake investigate.
Depressed by his feelings with Flame Princess, Finn enters a pillow fort built by Jake where he enters a new world and makes a new life for himself.
Magic Man steals Jake's sandwich and encases himself in a magical time slowing forcefield that stops him from eating the sandwich before Jake figures out his riddle.
Finn and Jake are called to solve a Candy Kingdom hostage crisis when a rogue cookie takes over.
Memory of a Memory is the third episode in the third season of Adventure Time. Marceline casts a sleeping spell on herself. To wake her up, a wizard transports Jake and Finn into her mind. However, it turns out the wizard is her ex-boyfriend, and tricks them into erasing the memory of the break-up.moreless
Princess Bubblegum is concerned over her mortality and reveals her designated successor to Finn and Jake.
The guys sneak into the Fire Kingdom and are caught in a family feud.
Ice King meets someone! Even though she's an island...and girlfriend to hairy, floating wolf god Party God.
When Finn and Jake get lost in the Bad Lands, they are saved by the ex-Goblin King.
A collection of short stories tackles the five senses.
The Gunthers cause chaos in Ooo.
The guys' game of catch goes awry when their throwing disc is lodged in a large tree.
Finn must travel to the dimension known as Lumpy Space to find a cure that will save Jake, who has been bitten by the Lumpy Space Princess.
Into the land of lemons once more, where we meet LemonHope.
Jake finds fatherhood challenging.
When Finn thinks he's lost a sock, B-Mo is covertly on the case.
Finn receives a bag full of miniature versions of his friends.
After accidentally creating candy zombies, Princess Bubblegum and Finn must make sure not to alarm the candy people about the impending zombie attack.
Finn and Jake go on a quest for a book that will prove them as worthy adventurers.
Finn is jealous of the new guy in the Candy Kingdom.
Finn and Jake, along with an elephant named Tree Trunks, search for a crystal apple.
The Ice King kidnaps Finn, Jake, and several princesses and locks them in an ice cell. It's up to Finn and Jake to defeat the Ice King and free everyone, including themselves.
Vampire Queen Marceline visits Finn and Jake, and kicks them out of their home, telling them the house actually belongs to her, as her initials were carved in it. Now, Finn and Jake are forced to find a new home in a cave, but little do they know of the danger they will face from Vampire Queen Marceline!moreless
In the forest, a bear sees Finn and Jake and the bear thinks of Finn as his role model. Finn takes the bear home but Jake thinks the bear is creepy. The next morning the bear is dressed exactly like Finn. He starts to mimic Finn a lot. Soon, Finn thinks the bear is impersonating him and taking his identity. Finn accidentally makes the bear cry and the bear rushes into the forest. Finn races after the bear and as a gift, gives the bear the Enchiridion (in this episode it is revealed that Finn and Jake never really use it, only to sit on the grass when it's wet.) The episode ends with the bear giving the Enchridion to the snail that is possessed by the Lich.moreless
Ever since Cinnamon Bun ate a piece of zombie flesh, he and other creatures have been turning into zombies. Princess Bubblegum has the formula for an antidote, but when she is turned into a zombie, Finn, Jake, Lady Rainicorn and Lumpy Space Princess have to make the antidote themselves.
Jake goes back to being a criminal with his old gang to save his "little" girl, Jake Jr.
Finn and Jake are scorching icebergs when they come across an iceberg containing businessmen. They soon have the men do their work for them. When the two are playing a video game, the businessmen go and start "saving" little creatures by trapping them in an enormous machine. Finn and Jake save them and tell the businessmen that their new job is to be frozen in the iceberg.moreless
Finn tries to tend to the town's needs.
When a creepy sleep-peeping Lemongrab upsets Princess Bubblegum with his creepy ways, Finn and Jake need to tend to some issues in the Outer Realm.
Finn and Jake are offered the chance to obtain free wizard powers, and eagerly accept. But after completing their wizard training, Finn discovers the real reason for the free powers.
Princess Bubblegum and Lady Rainicorn go on a quest to find Finn and Jake who're missing after fighting the Ice King.
Flame Princess and Ice King battle, prompting Finn to have an exciting dream.
Finn goes through a transformation after a run-in with a Hug Wolf.
A jiggly creature follows Finn and Jake home. Finn and Jake learn that the Jiggler likes music and start to dance with him the whole day. The next day the creature isn't feeling so good. Finn and Jake discover the Jiggler wants to be with its mom and they bring the Jiggler back to its home.moreless
Jake is jealous of Finn and Lady Rainicorn's new friendship.
Frog people seek protection from an evil lizard who's attacking their swamp.
Finn worries that Flame Princess may still be evil.
PB and Marceline team up to reclaim lost property.
Finn tries to prove Flame Princess isn't evil.
Finn and Jake discover a suitcase in a treasure hunt and find several videotapes in them, which they soon watch at their house. Seeing details of the Ice King's personal life, Finn and Jake keep viewing the tapes to discover his evil secret.
Finn and Jake meet a horse with the power to cheer up sad people.
Finn's hat comes to life while he's swimming.
BMO gets snatched away by a giant eagle and must find his way home with the help of a bubble and a baby.
In order to do research for her tell-all memoir about men, Lumpy Space Princess goes undercover working for Finn and Jake.
Jake becomes a copy of himself after a run-in with Martians.
Slime Princess wants help, and needs Finn to be her lover to solve her problem.
After Finn rejects food that Jake has prepared for the both of them, they go to Tree Trunks' house to have apple pie. Unfortunately, though, they find that the apples are all gone, so the three of them set out to find the one who stole the apples.
Finn gets caught in a spider web and ends up mediating disputes between disgruntled spiders.
Princesses lose body parts under mysterious circumstances.
A suitor pursues Tree Trunks, but Jake is upset it disrupts her baking.
Peppermint Butler lines up a suitor for Bubblegum, who he thinks is working too much.
Finn is hailed as a hero everywhere he goes.
Lumpy Space Princess is distressed over a stolen object, but "faints" before Finn and Jake can find out what it is. The two friends are on the case as crime solving detectives, where Jake can't stop transforming into cop gear/accessories.
Finn helps the Box Prince save his kingdom from an impostor.
The Ice King's computer virus puts everyone in danger.