Buttercup

Buttercup is one of the three Powerpuff Girls. Compared to her sisters, she is the toughest and most impulsive member. She always takes pleasure in fighting crime, and is sometimes very bossy, like Cera, but she never does anything in the name of evil and she's protective of her sisters.

She's also a trusted ally to the FT Squad.

Trivia

 * Buttercup met Kaytlin in Kaytlin's Adventures in The Powerpuff Girls.
 * Buttercup will guest star in The FT Squad's Adventures with the Winx Club.
 * Buttercup is a member of the Kids Next Door as Numbuh 65.