The Ice King has many penguins, but Gunther is his most loyal and stalwart companion. He is almost always at the ice king's side or hanging out with his other little penguin friends. After 'The Chamber of Frozen Blades' it is revealed he is a girl and was giving birth to an egg.

Gunther also has an intense passion to break bottles, which is demonstrated in currently two Adventure Time episodes, one being Reign of Gunthers.

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