|Relations|| Earl Sandwich(husband), |
|Location||Dimension Prime, Babylon Gardens|
Jill moved into Babylon Gardens with her husband because they heard it was a pet friendly neighborhood. Upon arriving they decided that their pet; a young Peanut, needed a sibling, so they went to animal shelter where they adopted their second pet, a cat named Grape.
Jill has appeared numerous times, usually taking Peanut and Grape to places they can't get to on foot, like areas of the city. She has a distinct disgust for The Milton Ferrets, after Simon stumbled into their yard half drunk.
- Her name is a reference to the video game Resident Evil, where the character Jill Valentine joked to another character after a predicament in the game that zombies had nearly made her into a "Jill sandwich". Earl is particularly amused by the joke, but Jill herself doesn't get it.
|Dogs||Peanut | Bino | Fox | King | Tarot | Fido | Joey | Sasha | Tiger | Bailey | Ralph | Kevin | Duchess | Rex | Lester | Dallas | Yeltsin | Boris | Satau | Mungo|
|Cats||Grape | Max | Sabrina | Marvin | Res | Jasper | The Bigglesworths | Fiddler and Keys | Delusional Steve | Ptah|
|Others||Zach | The Milton Ferrets (Keene, Lana, Rock, Simon, Pit and Duke) | The Wolves Pack | Karishad | Raccoons | Itsuki | Jessica | Spo | Squeak | Jata | What Chicken | Bruce and Roosevelt|
|Humans||Earl Sandwich | Jill Sandwich | Ryan Byron | Bill Lindberg | Jerry Arbelt | Jeff | Jake | Jeeves | Mr. Steward | Joel Robinson|
|Fictional||Spot (Superdog) | Stripe | Jim-Jim | Bat-Bat | Regular Hawk | Criminals | Pridelands Characters|
|Celestials||Pete the Griffin | Spirit Dragon | Great Kitsune | Cerberus | Bahamut | Denizens of Heaven|