| Race: | Human (formerly) Cat |
| Gender: | Female |
| Relatives: | Twin sister: Bubble Sisters: Toil and Trouble |
| Saga: | |
Bubble is a black cat who is actually the twin sister of Bubble, she was a human but was changed into a cat a long time ago and decided to stay that way. They seem to understand what Bubble says, since Bubble said "*mew*" and her twin sister said "Bubble is right…". Bubble and her twin sister have the same name, Trouble says, because their parents were not the most creative people.