Junior is the apparent son between Fizgit and Sylvester.
| Characters | |
| Main Characters |
Steve Cash • Sylvester |
| Recurring Characters |
Gibson • Random Kitty • Shelby • GG • Izzy |
| The Random Gibsons |
Gibbyson • Thug Kitten • Dunn • Dubsy • Shy Kitten |
| Famous Characters |
Grumpy Cat |
| Sylvester's Past Lives |
Sylvester's First Life • Rufus |
| Minor Characters |
Alexander • Daisy • Edna • Fizgit • Heidi • Ibanez • Junior • Little Buddy • Missy • Penguin • Penny • Richard • Rocket • Sam Winchester • Sleeping Cat • The "Meow Cat" • The "Southern Meow" Cat • The Harry And Marie Cat • The Meowing Cat • The Pick Me Cat • The Staring Cat • Todd's Dog • Todd's Dog 2 • Siamese Kitten • White Kitten |
| Hidden Characters |
Celia DeCosta Cash • Darcy Erickson • Michael Tetro • 4Steves |
| Groups |
The Trio • The Random Gibsons • Pause For The Cause |
| Series |
Talking Kitty Cat (Series) • Sylvester's Diary |