Gunter

Gunter (or Gunther) is Ice King's main penguin servant and his only friend. Gunter's gender is unknown. (See the Gender and identity section of this article for details.)

In "What is Life?," one of her known duties is using her head as a stand for the Ice King's video game machine. She 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. She 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." She then appears again in "It Came from the Nightosphere," where she almost gets her soul stolen and is instead dubbed as "the most evil thing in the world". She appears in "The Chamber of Frozen Blades" where she is very sick, but it turns out she was pregnant, and her egg hatches, revealing a floating pink kitten.

Appearance
Gunter looks like a regular penguin with big eyes, a navy blue back, and a white flat belly. She is apparently very fat for a penguin, as Ice King has called her, "Daddy's little fatty", though this may only be a joke or a show of affection on Ice King's part. The latter is likely, since Gunter looks exactly like every other penguin in the Ice Kingdom. Although Gunter is a penguin, she makes a "quacking" sound.

Relationships
The Ice King sometimes gets agitated by Gunter's actions, such as when she accidentally broke his video game, but the Ice King seems to appreciate her company. She is very loyal to the Ice King and even though she is his servant, Gunter occasionally wanders off. She may be Ice King's best friend, but she may be his only friend. Ice King seems to pay more attention to Gunter then the rest of his penguins.

Gender and identity
The gender of Gunter is unknown and was left purposefully ambiguous.
 * In the episode "The Chamber of Frozen Blades", Gunter lays an egg. In the real world, only female birds lay eggs. However, since the egg contains a magical kitten, it's possible that real world rules do not apply.
 * Ice King believed that Gunter is male. However, when questioned about it, he seemed to not really be sure and simply shrugged off the question.
 * In the real world, "Gunter" is a male first name.
 * Series writer Adam Muto provided a cryptic answer about Gunter's gender, saying "There's an even deeper question you're missing. One that I hope we'll address in a future episode."
 * Series character designer Natasha Allegri suggested that "Gunter" might always be a different penguin, and that it's just the name Ice King calls "whatever penguin hangs around him the longest."

Trivia

 * Gunter, for some reason, was dubbed the most evil creature that Marceline's father had ever seen, indicating she may secretly be evil and smarter than others realize.
 * The father of the pink kitten is unknown.
 * In "What is Life?" the Ice King comments on Gunter gaining weight. This may foreshadow Gunter's pregnancy.