She is one of the 3 main characters in "The Powerpuff Girls". She's has a very cute, bubbly, sweet and joyful attitude. Her best friend is Octi, a stuffed octopus given to her by the Professor.  Bubbles does have a tendency to be overemotional, despite having a habit to be ditzy, naive and sensitive, she is still able to be independent and sometimes aggressive at times (rarely tho). She is also generally shown to be very caring of her sisters and the Professor as well as others. 