Gumball inadvertently cracks open Penny's shell, and discovers who she really is inside...
| Title | The Shell |
|---|---|
| Genres | Animation Family Sci-Fi & Fantasy Comedy |
| Release Date | 2014-10-09 |
| Episode Runtime | 00 Hours 11 Minutes |
| Season Number | 3 |
| Episode Number | 20 |
| Production Companies | Cartoon Network Studios Europe, Boulder Media, Studio Soi, Hanna-Barbera Studios Europe, Dandelion Studios |
