Chie Uru is Yui Kawa's close friend, their bond forming a central dynamic. She possesses a notably short temper, reacting violently when provoked, especially by the Kimengumi group's teasing; this aggression often manifests physically as her beating them up. Comments about her droopy eyes are a significant berserk button, reliably triggering her anger.

Initially portrayed as levelheaded and snarky, Chie undergoes characterization shifts, evolving into a more comically flawed figure prone to slapstick moments. She becomes increasingly depicted as a Straw Loser compared to Yui's popularity. Despite this, her core traits persist: she remains hot-blooded, unfeminine in behavior, and frequently the butt of jokes, solidifying her Butt-Monkey status where others mock her.

Her culinary skills are terrible, making her a Lethal Chef, sharply contrasting with Yui's abilities. In sports, she is athletic and competent in physical education, but overconfidence leads to inconsistent performance; neglecting training makes her less reliable than Yui in actual tournaments.

Chie prominently acts as a Tsundere, specifically the harsh subtype. Beneath her aggressive exterior lies a good-hearted nature, shown by her genuine care for Yui and eventual acceptance of the Kimengumi as friends. She serves as a Shipper on Deck for Yui's crush on Rei, supporting it despite her personal annoyance with him. Romantic undercurrents exist with Gō Reietsu, as both share similar traits and occasional Ship Tease.

Her family runs a flower shop. Her name, "Uru Chie," is a pun derived from "urusai" (meaning "obnoxious" or "annoying"), reflecting her abrasive demeanor. Throughout all media, she consistently embodies the Tomboy archetype, marked by short-temperedness, physicality, and being mocked for lacking femininity, contrasting with Yui's Girly Girl persona.