Cony is a white rabbit with small black eyes, short ears, and a short tail. Her appearance transforms with cosmetics, sometimes revealing oval-shaped eyes framed by long eyelashes. Pink defines her theme color, prominent in accessories like her smartphone and superhero costume.

She radiates bright, energetic, and passionate energy, especially around Brown. Curiosity drives her, and she eagerly tackles new challenges. Despite her generally cheerful nature, a quick temper flares, occasionally leading to harsh physical reactions toward friends; this contrasts sharply with her notably submissive demeanor around Brown. She constantly battles ongoing dieting struggles yet holds the title "Cooking Leader" for her culinary expertise.

As one of the franchise's four original characters, she shares a birthday with Brown, though discrepancies exist between animated and official versions. Childhood friends with Moon, Brown, and James, she contributed a bunny plush to a time capsule they buried together.

Cony is married to Brown and nurtures deep affection for him, while simultaneously idolizing James. Initial dislike for Moon evolved into ambiguous feelings. Her friendship with Jessica burns with envy over Jessica's fashion sense, once driving Cony to attempt transforming into her. She maintains kindness toward Sally, appreciation for Leonard, and exhibits surprise or wariness toward characters like Boss and Dorothy.

She fights crime as LINE Pink Cony in the superhero team LINE FIVE, utilizing a communication and transformation bracelet. An application to join the rival team LINE Pretty Angels ended in rejection. Merchandise and stickers frequently depict her daily life: shopping, applying makeup, eating, drinking champagne, handling money, skateboarding, and taking selfies.

Trivia notes include her shared blood type with Moon, an origin story tied to Easter, and an unspecified brother. Her non-coarse, cute portrayal also places her in linguistic discussions concerning the word "cony."