Gunter

"Of all history's greatest monsters, you are by far the most evil thing I've encountered. Offer your soul to me Dark One."- Marceline's Father

Gunter (or Gunther) is the name Ice King gives to on of his penguin servants. Gunter's gender remains unknown, but in "The Chamber of Frozen Blades" Gunter lays an egg.

In "What is Life?," one of Gunter's known duties is being used as a stand for the Ice King's video game machine. Gunter also tried to warn the Ice King that Finn and Neptr were in the room. Gunter may be one of the penguins seen in the Theme Song, in the Ice Kingdom. Gunter may also have appeared in other episodes featuring penguins, although it's impossible to tell because Gunter is indistinguishable from other penguins. Gunter is mentioned in "What Have You Done?" when Ice King says: "Gunter, pick up Finn's dead carcass." Gunter appears again in "It Came from the Nightosphere," where his/her soul is almost stolen and is dubbed "the most evil thing (in the world)" by Marceline's Dad. Gunter appears in "The Chamber of Frozen Blades" and is very sick, but it later turns out he/she was pregnant, and the egg hatches, revealing a floating pink kitten.

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. He/she is shown to be a troublemaker in this episode.

Appearance
Gunter looks like a regular penguin with big black eyes, a navy blue back, and a white flat belly. Although Gunter is a penguin, he/she makes a "quacking" sound.

Relationships
The Ice King sometimes gets agitated by Gunter's actions, such as when he/she accidentally broke his video game, but the Ice King seems to appreciate his/her company.

Trivia

 * Gunter, for some reason, was dubbed the most evil creature that Marceline's Dad had ever seen, indicating that one of Ice King's penguins may secretly be evil and smarter than others realize.
 * The father of the pink kitten that comes out of the egg Gunter nurtures is unknown.
 * In "What is Life?," the Ice King comments on Gunter gaining weight. This may foreshadow Gunter's pregnancy.
 * Finn and Jake must have known Gunter because they were surprised when they found out that Gunter was a woman (or at least assumed female because Gunter laid the egg).
 * Although the name is spelled "Gunter," it's been pronounced "Gunter," "Gunther," and "Goon-ter." http://www.formspring.me/MrMuto/q/218550138124140229</ref