Mary Margaret
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| Character of Hey Arnold! | |
|---|---|
| 200px | |
| Mary Margaret | |
| Occupation | Student |
| Family | Unknown |
| Best friends | Unknown |
| Relationships | Unknown |
| Voiced by | N/A |
Mary Margaret is a sixth-grader who appeared in the Hey Arnold! Chapter Book, Arnold's E-Files.
She has never appeared in the main TV Series.
