The Grim Adventures of Billy and Mandy Episode Ratings Heatmap
2001 · 7 Seasons · 161 Episodes · Overall Score: 7.0/10 (61 rated)
Season 5 holds the highest collective average score across the series.
Season 5 Details →Lowest score variance (σ = 0), maintaining an average of 7.0.
Complete Episode Rating Matrix
Interactive score chart by season and episode number. Darker green indicates higher ratings; amber and red denote lower reception.
| Episode | Season 1 | Season 2 | Season 3 | Season 4 | Season 5 | Season 6 | Season 7 |
|---|---|---|---|---|---|---|---|
| Ep 1 | 7.0 | 6.0 | – | 4.0 | 7.0 | 7.0 | 7.0 |
| Ep 2 | – | – | – | 7.0 | 7.0 | – | – |
| Ep 3 | – | – | – | – | – | 8.5 | 7.0 |
| Ep 4 | – | 7.0 | – | 7.0 | 7.0 | 7.0 | – |
| Ep 5 | – | – | – | – | – | – | 7.0 |
| Ep 6 | 7.0 | – | – | 7.0 | 7.0 | 7.0 | – |
| Ep 7 | 7.0 | 5.0 | – | – | – | – | 7.0 |
| Ep 8 | – | – | – | 7.0 | 7.0 | 7.0 | – |
| Ep 9 | – | – | – | – | 10.0 | – | 7.0 |
| Ep 10 | – | 4.5 | – | 7.0 | 7.0 | 7.0 | – |
| Ep 11 | – | – | – | 7.0 | 7.7 | – | 7.0 |
| Ep 12 | 7.0 | 7.0 | – | – | – | 7.0 | – |
| Ep 13 | 7.0 | – | – | 7.0 | – | – | 7.0 |
| Ep 14 | – | – | – | – | – | 7.0 | – |
| Ep 15 | – | 7.0 | – | 7.0 | – | 7.0 | 7.0 |
| Ep 16 | – | – | – | – | – | – | 7.0 |
| Ep 17 | – | – | – | 7.0 | – | 7.0 | – |
| Ep 18 | 7.0 | 7.0 | – | – | – | – | 7.0 |
| Ep 19 | 7.0 | – | – | 7.0 | – | 7.0 | – |
| Ep 20 | – | – | – | – | – | – | 7.0 |
| Ep 21 | – | – | – | 7.0 | – | 7.0 | – |
| Ep 22 | – | – | – | – | – | – | – |
| Ep 23 | – | – | – | 7.0 | – | 7.0 | – |
| Ep 24 | – | 7.0 | – | – | – | – | – |
| Ep 25 | – | – | – | – | – | – | – |
| Ep 26 | – | 7.0 | – | – | – | – | – |
| Ep 27 | – | – | – | – | – | – | – |
| Ep 28 | – | – | – | – | – | – | – |
| Ep 29 | – | – | – | – | – | – | – |
| Ep 30 | – | – | – | – | – | – | – |
| Ep 31 | – | – | – | – | – | – | – |
| Ep 32 | – | – | – | – | – | – | – |
| Season Avg | 7.0 | 6.4 | – | 6.8 | 7.5 | 7.1 | 7.0 |
Ratings Analysis & Trajectory
Across 7 seasons and 161 episodes, The Grim Adventures of Billy and Mandy has earned an overall series rating of 7.0 out of 10. The series displays remarkable consistency across its narrative arc, maintaining reliable ratings from premiere to conclusion.
The single highest-rated hour of television in the series is Season 5, Episode 9 ("The Schlubs"), rated at an extraordinary 10.0/10 with 1 ratings. Conversely, the lowest-rated installment is Season 4, Episode 1 ("The Secret Snake Club"), landing at 4.0/10.
The most precipitous single-episode shift occurred in Season 5 between Episode 9 ("The Schlubs", 10) and Episode 10 ("Prank Call of Cthulu", 7), a swing of 3 points.
Top 10 Highest Rated Episodes of The Grim Adventures of Billy and Mandy
| Rank | Episode | Title | Score | Votes | Air Date |
|---|---|---|---|---|---|
| #1 | Season 5, Ep 9 | The Schlubs | 10.0 | 1 | Oct 14, 2005 |
| #2 | Season 6, Ep 3 | Keeper of the Reaper | 8.5 | 2 | Jan 13, 2006 |
| #3 | Season 5, Ep 11 | Billy & Mandy Save Christmas | 7.7 | 3 | Dec 2, 2005 |
| #4 | Season 2, Ep 4 | Night of the Living Grim | 7.0 | 2 | Jun 20, 2003 |
| #5 | Season 7, Ep 15 | Billy and Mandy Moon the Moon | 7.0 | 2 | May 28, 2007 |
| #6 | Season 1, Ep 1 | Meet the Reaper | 7.0 | 1 | Aug 24, 2001 |
| #7 | Season 1, Ep 6 | Get Out of My Head! | 7.0 | 1 | Sep 7, 2001 |
| #8 | Season 1, Ep 7 | Fiend Is Like Friend Without the 'R' | 7.0 | 1 | Oct 5, 2001 |
| #9 | Season 1, Ep 12 | Grim or Gregory? | 7.0 | 1 | Jul 26, 2002 |
| #10 | Season 1, Ep 13 | Something Stupid This Way Comes | 7.0 | 1 | Jul 26, 2002 |