Grim's Diary
Name Grim's Diary
Origin The Grim Adventures of Billy & Mandy
Type Book
Owner Grim Reaper

Grim's Diary is an important object that appeared in Grim Tales


Grim kept a diary in his time when he was with Billy and Mandy. He wrote down his adventures with them and how he felt wih them, especially with Mandy. Grim Jr. eventually found it in one of his vaults and started to read in it.

The book also is the family's family album.

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