Buttercup is the green Powerpuff Girl. She has black hair that she wears in a flip. Like the ending song says, Buttercup is the toughest fighter out of the Powerpuff Girls. Buttercup isn't scared of many things and she likes to fight, alot. Unfortunately, Blossom always wants to do things her way which can make Blossom and Buttercup get angry at each other. In "Octi Evil", they get so mad they refuse to work together--until "Him" tries to kill Bubbles. Buttercup also gets annoyed when Bubbles starts crying. She thinks Bubbles needs to be more tough. That's why she'll sometimes try to scare Bubbles with Boogie Man stories. Buttercup is sometimes the one who defeats bad guys. She was the one who stopped Mojo Jojo from ruling the world when he turned everyone into dogs. She also stopped the Gang-green Gang from hurting Blossom and Bubbles. She also stopped Elmer (a giant glue monster) from destroying Townsville by apologizing to him. (She threw paste at him.) She may be the tough one, but Buttercup once had a crush on Ace from the Gangrene Gang. She got over that pretty quickly. However, Buttercup thinks love in general is mush. Buttercup is definitely vital to the Powerpuff Girls. She is a big help and won't let bad guys push her sisters around.