Bell is one of the main antoganist of Powerpuff Girls Crossover. She is an original character and is also a Shadowpuff Girl.
Powerpuff Girls Crossover
Bell first appeared when she was watching the fight between the Powerpuff Girls and Dexter. Later when the Dread Dragon was defeated she encountered Mojo Jojo and took him to her home. At her home she also encountered HIM and Sebastian Longquin.
She later appeared when Blossom sat down at a tree outside when suddenly Blossom was attacked by Bell and Mojo. After a fight between Bell and Blossom, Mandark came with Clusters and they captured Blossom.
During the fight between Dexter and Mandark, Bell was already sleeping but Dr. X told to Sebastian about the past of Mandark and that when Mandark was in his depression because he killed Dee Dee, Bell came to him and took him with her home. Bell saw Mandark as her big brother. When Mandark was killed Bell was very angry at her father for doing nothing and just letting him kill Susan.