Reign of Gunters

Synopsis
Gunter attempts to take over all of Ooo with the pink kitten, while she sends a distracted Ice King away.

Plot
Ice King is in his room looking for his demonic wishing eye. Gunter comes in and Ice king follows her to a hair brush. Ice King says the brush is for princesses only, and it is shown that it has a dirty piece of Princess Bubblegum's hair stuck to it, which Ice King smells. He decides to look for a magic wishing eye online, but Gunter annoys Ice King. He decides leaves to go to Wizard City to get a new wishing eye, and Gunter is breaking bottles. She heads to the Ice King's recliner, where it is revealed that Gunter keeps its kitten offspring, and Ice King's demonic wishing eye.

Later, Finn wakes up to find a Gunter on him,and it zooms out to show the room filled in Gunters. Finn tries to make them go away, but they just mimic Finn. Jake gets angry and grows, knocking down all the Gunters but they grow too and attack Jake. Finn starts fighting them but they fall downstairs. The Gunters start slapping Finn and Jake (one kicks Jake) and Finn screams "Ice King!" as he gets slapped.

The scene changes to Ice King flying to Wizard City. It is hidden by a fake cliff, and when Ice King says 'wizards rule', the fake cliff disappears. Inside the city, Ice King comes to a stop in front of a store. He reads the sign above that apparently has the wizard symbol for "magical items". He asks Huntress Wizard just to be sure and she replies, and Ice King complains that they should write it on the sign and protests "No More Symbols" and "No More Initiations!" Then Huntress Wizard asks if Ice King is trying to get himself killed then leaves. Ice King goes inside the store and inside is a hallway which leads to a room with a table and Bufo, Forest Wizard and Laser Wizard are talking there. After their conversation, they chant something as Ice King walks up to them. Ice King asks "to keep what tight?". The three wizards get angry and Laser Wizard says it's a secret Ice King never shouldn't have heard. The three wizards walk up to him and attack him.

Meanwhile, Jake gets flattened by the Gunters and the real Gunter comes in with the kitten taped to its back and is wearing Ice King's demonic wishing eye and breaks two bottles. Finn asks where Ice King is, but Gunter just leaves, and the fake Gunters follow Gunter. Finn and Jake walk out of their house to find fake Gunters scattered all over the Grasslands. Finn wonders if the fake Gunters are everywhere, then Jake grabs a telescope. Jake, scared by what he saw, gets kicked by Finn and says "It's over. We've been conquered." Jake says everyone's been conquered by Gunter. Finn looks through the telescope and sees Gunter leading his army to the Candy Kingdom. Finn breaks the telescope and rides Jake to the Candy Kingdom, but Finn notices he is still in his pajamas and that he has to change.

Finn calls Princess Bubblegum and she's mad by the fact that there is an army of fake Gunters heading towards the Candy Kingdom. Princess Bubblegum says that Gunter has to get past the Banana Guards and the Gumball Guardians. Jake says that it won't work and Finn says that he has a plan and when he gets there he will do his plan as an addition to Princess Bubblegum's plan and ends the call. Finn tells Jake that he won't reveal his plan because he prefers to be mysterious, keeping all the ladies in a state of confusion; that way, he has "options in case Flame Princess doesn't work out." Finn says it's called "Future Farming" and he got it from Jake's book, Mind Games by Jay T. Dawgzone, making Jake tell Finn that it will mess up his brain and that he only kept the book for laughs because it's full of bad advice, but lets Finn be mysterious for a while. Finn and Jake arrive and Finn climbs on the wall and Princess Bubblegum tells him the cavalry is standing by. Finn decides to rally some citizens, but then unicorn-shaped fake Gunters attack them. Then, Princess Bubblegum commands guards riding on candy horses to defend, but they fail. One Gumball Guardian tries to defend but is taken down by a giant Gunter made out of Gunters, and many more Gunters are coming. Princess Bubblegum taunts Gunter that he can't break the wall, but he releases the cat and it shoots out lasers while being in an aura made out of energy and destroys the wall.Gunter flies to where the wall is and when the smoke clears up, Finn shows that his plan was to collect all the bottles in the land, as Gunter likes breaking bottles. The army follows and breaks more bottles, with glass flying everywhere.

Finn promises that they won't run out of bottles, but as Finn finished the sentence there are no more bottles left, and it shows that the bottles have been redued to a pile of broken glass. Gunter calls its army to attack Finn, Jake and Princess Bubblegum. Finn tries to attack Gunter, but Gunter uses the wishing eye to make its army spit out swords and attack. Princess Bubblegum says she has a third plan, which was to make bottles out of the broken glass (forever). Gunter comes in to tell the three that it will kill the Gumball Guardian if they don't give him any bottles. Princess Bubblegum tells him to wait, but Gunter decides to kill the Gumball Guardian, as Gunter taps the glass and makes a crack, Ice King, damaged, comes and see Gunter with his wishing eye. Ice King then punishes Gunter by squirting water at her. Ice King commands her to remove the demonic wishing eye, and as Gunter does so her army disappears and Gunter walks away. Finn asks why Ice King is jacked up,and replies that he got into some crazy wiz-biz at Wizard City, and says he doesn't know how he survived. He wants to tell them, but says, "Wizards only, fools. Keep it tight."

Major characters

 * Finn
 * Jake
 * Gunter
 * Ice King
 * Princess Bubblegum
 * Kitten

Minor characters

 * Huntress Wizard
 * Bufo
 * Brain Wiz
 * Forest Wizard
 * Laser Wizard
 * Snail
 * Gumball Guardians
 * Banana Guards

Mentioned

 * Flame Princess
 * Jay T. Dawgzone

Trivia

 * This is the last season 4 episode storyboarded by Jesse Moynihan and Ako Castuera. They'll come back to work on season 5 and 6.
 * Apparently Ice King has no idea of the genders of his penguins, because in the beginning of the episode he calls Gunter "girl," but at the end he calls Gunter "he."
 * This is the first episode where Flame Princess is mentioned, but does not appear.
 * When Ice King entered Wizard City, you can see Brain Wizard who is still a cat on the left corner, it seems that he has not broken the curse yet.
 * When the pink Kitten blows up the castle wall, a piece of debris is shaped like Tree Trunks.
 * A hidden wizard city may be a reference to Diagon Alley in Harry Potter.
 * The official artwork of Jesse Moynihan shows Finn reading the book of Jay T. Dawgzone, with a tense face. The back part of the book shows a photo of the author, which seems to be using a coat, a top hat and thick glasses.

Episode connections

 * Many minor and background characters from past episodes return:
 * Bufo makes his third appearance since season three's "Wizard Battle." His first was in "Wizard."
 * Various other wizards from "Wizard Battle," such as the Huntress Wizard, Laser Wizard, Forest Wizard and Brain Wizard.
 * This is the first appearance of Kitten since "Princess Monster Wife." It first appeared in "The Chamber of Frozen Blades."
 * An Ice Penguin Monster from "King Worm" returns as a real character.
 * The idea of Gunter's love for breaking bottles, first explored in "Still," is revisited.
 * The possibility of one of the penguins being "the most evil creature in all of Ooo" was originally proposed by Hunson Abadeer in "It Came from the Nightosphere".
 * The Ice King's Demonic wishing eye is finally utilized by Gunter; he originally revealed he owned it in "When Wedding Bells Thaw."
 * The original color of the Demonic wishing eye is red but they changed it into green.

Videos
Adventure Time - Reign of Gunters (short preview)|Short preview. Adventure Time - Reign of Gunthers (long preview)|Long preview. "Reign of Gunthers" Animatic|Animatic.