Mr. Krupp's toupee is his "wig".
- Most people don't know Mr. Krupp wears a toupee, yet various times in the series, his toupee jumps off of his head in front of teachers and kids.
- In the alternate universe, Nice Mr. Krupp isn't wearing the toupee, however when water is poured on his head and he becomes Captain Blunderpants, he wears the toupee.
- In season three of TETOCU, Mr. Krupp talks to his wig, calling it by the name “Hairy.”
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