2007 | 24 Episodes
Season 0 of The Grim Adventures of Billy and Mandy premiered on March 30, 2007.
2001 | 23 Episodes
Season 1 of The Grim Adventures of Billy and Mandy premiered on August 24, 2001.
2003 | 26 Episodes
Season 2 of The Grim Adventures of Billy and Mandy premiered on June 13, 2003.
2004 | 32 Episodes
Season 3 of The Grim Adventures of Billy and Mandy premiered on June 11, 2004.
2005 | 24 Episodes
Season 4 of The Grim Adventures of Billy and Mandy premiered on February 25, 2005.
2005 | 11 Episodes
Season 5 of The Grim Adventures of Billy and Mandy premiered on July 29, 2005.
2006 | 24 Episodes
Season 6 of The Grim Adventures of Billy and Mandy premiered on January 6, 2006.
2006 | 21 Episodes
Season 7 of The Grim Adventures of Billy and Mandy premiered on June 6, 2006.
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