She possesses a violent and a mean streak not displayed by her sisters. In the episode 'Nuthin Special,' her special 'ability' is revealed to be that she can curl her tongue (Blossom and Bubbles cannot do this, nor can anyone else in Townsville).

In 'The Rowdyruff Boys,' she has a tremendous disdain for resorting to kissing the boys in order to eliminate them, though willingly kisses a boy ridden with what she feared to be 'cooties' in the episode 'Cootie Gras'. For example, in the episode 'Cover Up,' she had a soft green blanket that she was obsessed with that she would hug that gave her the confidence to be a better fighter, and she is quite protective over her sisters. She also showed a greedy side in 'Moral Decay,' to which she knocked out teeth for the sole purpose of obtaining money. She has shown these sides, and a softer side in several episodes. However, as displayed in 'Bubblevicious', she has enough control so as to not go 'overboard' on innocent civilians like Bubbles did, no matter how trivial the offense. Sometimes this, and her aggression, get the better of her, making her a little reckless and stubborn (but she overcame it in 'Makes Zen to Me'). Referred to in the ending theme as 'the toughest fighter,' she is the group's tough member and is easily enraged. The 'teenage' Powerpuff Girls also appear to have flat feet, which their 5-year-old counterparts don't have. She wears a green crop top with a red number “7” on it, high waisted dark green flared pants with a lighter green bow on the waistline, and dark green shoes. She is also shown with eyelashes, bright red lipstick, and a curvier figure. Unlike her younger counterpart, Buttercup’s hair is clearly longer, and styled in a shoulder length lob with a flip at the ends.

Along with this, the Girls imagine a scenario in which they are teenagers and have given up their crime fighting habits, causing the city to be full of chaos, as well as a new look. In the episode The City of Clipsville, there is a brief scene where the Girls come across a makeup kit, triggering this memory. Her special ingredient is spice and her signature color is light green. Buttercup also wears white tights and black Mary Jane shoes with her dress. She has lime green eyes and dresses in a lime green dress that has a black stripe in the middle of it. Buttercup has short black hair in a flip with a small triangular part on her forehead.

Powerpuff girl buttercup flying vector