Gunter

Gunter is the penguin that most commonly accompanies the Ice King. The Ice King uses Gunter as his personal servant, whereas the other penguins working for the Ice King are essentially slaves.

Biography
In "What is Life?," one of Gunter's known duties is being a stand for the Ice King's video game machine. Gunter also tries to warn the Ice King that Finn and Neptr are in the room.

Gunter is mentioned in "What Have You Done?" when Ice King says, "Gunter, dispose of Finn's carcass."

Gunter appears again in "It Came from the Nightosphere," where his/her soul is almost stolen and is dubbed "by far, the most evil thing I've encountered" by Hunson Abadeer, and thrown at the Ice King. The Ice King's response is "Gunter, who told you you could fly?"

Gunter appears in "The Chamber of Frozen Blades" and is very sick, but it later turns out that she was pregnant. A floating pink kitten hatches from the egg.

Gunter re-appears in the episode "Still," trying to mess with the potions Ice King brought to freeze Finn and Jake. Ice King says that Gunter likes to break bottles, which Gunter eventually does. He/She is shown to be a troublemaker in this episode.

Gunter's name is written on Marceline's journal in "Marceline's Closet."

Gunter appears multiple times in "Holly Jolly Secrets Part I" and "Holly Jolly Secrets Part II." Notably, during his/her "Penguin Dance Party" video, Ice King calls two different penguins "Gunter" in the same scene. It is unknown whether this was intentional by the show's staff.

In "Five Short Graybles," Ice King makes Gunter float out to sea on an iceberg because he believes that Gunter is making his castle smell bad. It is also shown that Gunter can play the keyboard, though not very well.

In "Princess Monster Wife," it is revealed that the other penguins are named a variant of "Gunter," and only one penguin is addressed as Gunter.

In "Reign of Gunters," Gunter proves s/he is the most (potentially) evil entity in Ooo, excluding the Lich, by using Ice King's demonic wishing eye to conquer Ooo and destroy all of its glass objects. At one point, the army of Gunters ran out of bottles to break, so Princess Bubblegum suggested reconstructing the bottles to perpetually keep Gunter occupied. Gunter got impatient, however, and attempted to shatter one of the Gumball Guardians' heads (seeing as it is essentially a giant bottle), showing that Gunter is so obsessed with shattering glass that s/he does not particularly care whether they are sentient or not. Gunter is only stopped when the Ice King returns from his outing, scolding him/her for taking his wishing eye and telling him/her to go back to the castle.

In "Jake the Dog," Ice King accuses Gunter of taking his crown jewels.

In "Bad Little Boy," an alternate Gunter in Ice King's fiction story is seen being ridden by Fionna and Cake.

In "I Remember You" Gunter is being held and sung to by Ice King, who is wearing a Marceline wig. Ice King sings a cover of "Fry Song," replacing many of the words with "Gunt," and Gunter starts chewing on the wig.

In "Five More Short Graybles," Gunter is among the penguins who want to lick Ice King's salty tears, but Ice King pushes him/her away, telling him/her that s/he's on a "low-salt diet."

In "All the Little People," there is a Little Gunter among the Little People. Strangely, he/she seems to notice Finn's hand when Finn gives Ice King his drum set.

In "Simon & Marcy," Simon refers to Marceline as "Gunter" when he puts on the crown and starts acting crazy. This may be a reason why she has Gunter written on her journal as mentioned above. It seems the name has some deep meaning in either Ice King's insanity or the crown itself because that seems to be the only name he can comprehend when naming something.

In "Princess Potluck," Gunter helps Ice King by baking lasagna to feed the rabbits to ruin Princess Bubblegum's potluck. Afterwards, Ice King dresses Gunter as a princess (using old socks and a bottle cap) and tells him/her to go to the party and throw fruit punch at everybody. However, everyone at the party recognizes Gunter and starts cheering him/her, who starts to party along.

In "The Party's Over, Isla de Señorita," Gunter is sleeping on the ice couch with a game console. Before Ice King leaves, he tells Gunter that he is now the "man of the house," and kisses him on the forehead.

In "Earth & Water," Gunter is given the Ice King's crown to remake the Ice Kingdom. Gunter uses it to make an ice arch and later a race of Strangling Snow Snakes.

In "Play Date," Gunter is mentioned, and it is revealed that he/she regularly only says "Wenk!"

In "Betty," Gunter is allowed to wear the crown again just like in "Earth & Water" and has been given some control in the Ice Kingdom for a short time as Ice King (known at that time as "Simon" due to being transform to human in the episode) is building a generator.

Appearance
Gunter looks like a regular penguin with big black eyes. She/he has a black back, black flipper-like wings, and a white flat belly. She/he also has a pointed yellow beak and yellow feet with three toes.

Episode outfits
Despite normally not wearing any clothes, Gunter wears outfits in some episodes:


 * Still - Gunter briefly wore an Ice collar.
 * Holly Jolly Secrets Part II - Gunter wore a red sweater with Christmas-related designs.
 * Reign of Gunters - Gunter wore the Demonic Wishing Eye and wrapped itself with tape along with The Kitten.
 * I Remember You - Gunter briefly wore a wig that looks like Marceline's hair.
 * Jake the Dog - Gunter wore a wet floor sign-shaped outfit that says "I STEAL JEWELS".
 * Princess Potluck - Gunter was dresses as a Princess. Gunter had a penny on top of its head and a mass of socks sticked to itself using tape. Gunter carried a taser beneath the socks. Another one was also dressed up, it wore red baking gloves.
 * Earth & Water - Gunter wore the Ice Crown as the temporary ruler of the Ice Kingdom.
 * Betty - Gunter wore the Ice Crown again but this time the Ice Crown had gray gems instead.

Sex and gender
There are a number of penguins that Ice King refers to as Gunter, or a variant thereof. He pronounces it differently depending on the penguin's personality. This is shown in "Princess Monster Wife" when multiple penguins are addressed with some variant of Gunter (e.g. Gundy, Gunder, Gunthy, Goonter, Günder...). Because of this, it is difficult to ascertain the sex and gender of Gunter, if there is a single Gunter.

Other characters typically refer to Gunter by masculine pronouns. For example, in "The Party's Over, Isla de Señorita," Ice King tells Gunter he is now the man of the house. However, in "The Chamber of Frozen Blades" Gunter lays an egg, which would likely mean it is female. Also, in "Hoots," Gunter manifests as a female bird in its dreams.

Personality and character traits
Gunter is a vandal penguin who doesn't care about what he/she breaks, shown in "Still." But in Gunter's first appearance "What is Life?," Gunter was helpful and tried to warn Ice King that Finn and Neptr were in his room. At times, Gunter can be neutral. In "Reign of Gunters," Gunter was evil and intended to conquer Ooo. Gunter can also be annoying seen in "Five Short Graybles" when he/she kept playing the keyboard. But, Gunter can also be fun shown in "Princess Potluck" when he/she joined the potluck and danced. Sometimes, Gunter also acts and sounds like a duck even if Gunter is meant to be a penguin.

Abilities

 * Gunter has good reflexes. In "Princess Potluck," Gunter was able to strike Ice King and Finn quickly with his/her taser.
 * Since Gunter likes to smash bottles, he/she can smash any bottle no matter how hard, as revealed in "Reign of Gunters."
 * Gunter also has the ability to use magical equipment.
 * In "Reign of Gunters," Gunter uses the Demonic Wishing Eye to make some clones that imitate Finn and some giant Ice Penguin Monsters capable of defeating the Gumball Guardians.
 * In "Earth & Water," Gunter uses the Ice Crown to he/she create some Strangling Snow Snakes that attack Finn and Ice King.
 * Gunter has an ability to slap people when someone trying to do bad things to him (except Ice King). In "It Came from the Nightosphere," Hunson Abadeer is trying to suck Gunter's soul, Gunther slaps him before he's/she's soul has been sucked.

Weaknesses

 * Gunter only has a few weaknesses:
 * s4e24 Squirty-Squirts.pngr can be easily distracted like the other penguins revealed in "What is Life?" when Gunter kept walking to Finn and Neptr in a circle.
 * Gunter can easily be defeated with the "Squirty-Squirts" because of it going to his/her eyes revealed in "Reign of Gunters" when Ice King used it on Gunter.

Major Appearances

 * "The Chamber of Frozen Blades"
 * "Still"
 * "Five Short Graybles"
 * "Reign of Gunters"
 * "Princess Potluck"
 * "Another Five More Short Graybles"
 * "Hoots"

Minor Appearances

 * "What is Life?" (debut)
 * "What Have You Done?"
 * "It Came from the Nightosphere"
 * "Loyalty to the King"
 * "Fionna and Cake"
 * "Holly Jolly Secrets Part I"
 * "Holly Jolly Secrets Part II"
 * "Princess Monster Wife"
 * "Beyond this Earthly Realm"
 * "King Worm" (dream)
 * "I Remember You"
 * "Jake the Dog"
 * "Five More Short Graybles"
 * "All the Little People (as a toy)
 * "Mystery Dungeon"
 * "Bad Little Boy" (alternative)
 * "The Party's Over, Isla de Señorita"
 * "Frost & Fire"
 * "Earth & Water"
 * "Betty"
 * "Jake The Brick"
 * "Evergreen"
 * "Friends Forever"
 * "Graybles 1000+"
 * "Water Park Prank"

Mentioned

 * "Simon & Marcy"
 * "Play Date"
 * "The Prince Who Wanted Everything"

Bad Gunter
Despite Ice King referring to all penguins as "Gunter," one of the penguins have a major trait. Bad Gunter is the vandal penguin who likes to smash bottles. The Kitten has a relationship with that only penguin. If the penguin in an episode is breaking bottles or being alone with the kitten, it probably means the penguin is the unique one. This penguin definitely appeared in "What is Life?,"(because of the episode being his/her first appearance) "Still," "The Chamber of Frozen Blades," and "Reign of Gunters." It is unsure if this Gunter appeared in "The Party's Over, Isla de Señorita" because of this penguin being "the man of the house now."

Ice King
The Ice King sometimes gets upset at Gunter, such as when he/she accidentally broke his video game or ate his socks, but the Ice King seems to appreciate his/her company. Ice King told Gunter that he loves him/her in "Holly Jolly Secrets Part I." The Ice King often speaks to him/her affectionately like a father. For example, in "What is Life?" Ice King calls Gunter "daddy's little fatty," and he often addresses him/her with terms of endearment such as "honey" or "sweetie."

Kitten
As one of the Gunter's child, Gunter gives a lot of parental affection to Kitten. Throughout "The Chamber of Frozen Blades," Gunter is seen kissing and hugging her/his egg. Gunter also does this in "Reign of Gunters."

Trivia

 * In the episode "Holly Jolly Secrets Part II," BMO deciphers a complicated code in the Ice King's crying, which reveals an image of Gunter when printed.
 * Gunter (variations: Günther, Gunthar) is an old German name made of the words Gund ("Fight," "Battle," "War") and Heri ("Crowd," "Folk") referencing the fact that Ice King calls all his penguins some variant of Gunter, making them his army.
 * Unknown Information (gender, individual etc.) about Gunter are debatable.
 * Marceline's journal has the name Gunter on it in the episode "Marceline's Closet."
 * Gunter, according to the Ice King, likes to smash bottles and eat socks.
 * Ice King has a picture of Gunter in his diary in "The Chamber of Frozen Blades."
 * In the game FusionFall, Gunter is a supporting character in the game along with Finn, Princess Bubblegum, Jake, and the Ice King. S/he also has an evil fusion counterpart called Fusion Gunter.
 * In "Reign of Gunters," Finn, Jake, and the Ice King continuously refer to Gunter as "Gunther," with an "h."
 * In "All the Little People," Little Gunter is seen following Finn's hand when he puts down Ice King's drums, even though Little People exist in another dimension and they cannot see Finn's. This implies Little Gunter can see Finn's dimension. However, it could be because it would have seen Ice King's drums floating in their dimension.
 * In "Simon & Marcy," when wearing the crown, Simon refers to Marceline as "Gunter."
 * In "Princess Potluck," Gunter is shown to own, or at least temporarily have possession of, a taser which she/he uses against both the Ice King and Finn.

Appearances in other media

 * Gunter is a playable character in Adventure Time Battle Party.
 * Gunter is seen in Legends of Ooo, holding a sign that reads "Princesses Only."
 * Gunter is seen with his/her Kitten as the boss in the game Break the Worm.
 * Gunter is a playable character in Adventure Time: Explore the Dungeon Because I DON’T KNOW!