She is spoiled rotten although she goes to the same school as the Powerpuff Girls™. Princess Morbucks is now their number 4 archenemy! She is not very nice, especially when she uses her money to get what she wants. Princess Morbucks not only wants to be a Powerpuff Girl, she wants to be the ONLY Powerpuff Girl!
Buttercup is the muscle of the Powerpuff Girls, who marches to the beat of her own giant, rebel drum. The toughest fighter among the girls, she kicks butt first and asks questions later. And don't ever, ever call her 'princess'. Like her sisters, Buttercup can fly and has superhuman strength but she can also create some powerful weapons with her aura powers.