Blossom Utonium is "the smart one" and self-proclaimed leader of the Powerpuff Girls.
Her personality is "everything nice", her signature color is pink, and she has long red hair with a red bow. She is often seen as the most level-headed, and composed member of the group and also strong and determined. She can also be fussy, overbearing, vain, and overly analytical at times. She tends to "mother" Bubbles and Buttercup, and often tries to play peacemaker between the two if they fight but ironically she is quick to argue with Buttercup who acts on impulse as opposed to her analytical nature. She is naturally caring to mainly her sisters, but also the Professor as well. In "A Very Special Blossom," we are shown a darker side to Blossom when she resorts to stealing the Pro-Excellence 2000 Golf Clubs for the Professor, who later says it's his fault for putting too much value in a material item instead of the love for the Girls. For this, her first (and fortunately only) offense, Blossom was sentenced to 200 hours of community service, which was a harsh reminder to her and to all that crime doesn't pay. Blossom is drawn to lavish intellect-enhancing toys and is often seen, in her free time, curled up with a good book. In the episode "Power-Noia" Blossom has nightmares about failing a test for which she forgot to study, only to find out that HIM is behind the girls' nightmares. The same episode establishes that Blossom is the smartest girl in Townsville. She also stated in a Movie that she finds inspiration from female superheroes. Her unique power is freezing objects with her breath as seen in the episode "Ice Sore" (although at the end of the episode, she was known to breathe fire). When flying she leaves a curved pink trail.
Blossom has long, fiery red-orange, waist-length hair with a triangular part and bangs and pink eyes. She wears a pink dress that has a black stripe in the middle with white tights and black Mary Janes. She has a red bow on the top of her head and a heart-shaped hair-clip that can be seen from behind.