|"They were clearly missing something." "You notice it too?"|
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| Mr. Gruber
| Character Information
Mr. Gruber is a minor character in The Amazing World of Gumball.
He is a bald eagle dressed in a standard mailman uniform with a gold belt to go along with it.
- Mr. Gruber is very likely to be based on the character Hans Gruber from the movie Die Hard, due to his similar voice. He also mentions a brother named Hans, presumably a reference to the aforementioned character.