Bubbles character is the cutest and most emotional of the Powerpuff Girls in the cartoon series. She is often seen as the shyest and easily scared of her sisters. However, when angry she can be more furious and intense. In this fanart Powerpuff Girls Bubbles Question Sticker, she wonders about something we still don't know. Maybe she thinks why you still haven't added it. Or how a black hole appears in space.