When she's at the Sadie Hawkins Dance with Lincoln, she greets him by vigorously bumping into him with her Booty Block. She also has a technique called the Helicopter, where she spins around her opponent, until they get so dizzy, they throw up. Lincoln is the first person she used that move on who didn't throw up from spinning like that. She ends up spending the rest of her time at the dance with Rusty, who ends up taking all the hits for Lincoln, and falls in love with Polly.
Like her friend Lynn, Polly is an energetic sport enthusiast. Her favorite sport is roller derby, and she speaks with boyish slang. She also likes practicing her roller derby tricks on others, and respects those who endure this. She's a tomboy, but not fully, since she wears pink clothes. She was angry at Lincoln for his dishonesty, but didn't feel bad, because she found Rusty as a better companion.
Polly is a tall girl, who wears her roller derby uniform, which has a yellow tank top, with a purple "P" on it, purple jean shorts, pink roller blades, wrist bands, and a pink helmet with stars on the sides. Her hair is brown, with pigtails, and she has a rather large chin.