"Flint flying like an eagle up there -- he's going to sc- no, stopped by an excellent move by Gryffindor Keeper Wood and the Gryffindors take the Quaffle -- that's Chaser Katie Bell of Gryffindor there, nice dive around Flint, off up the field and -- OOPS-- that must have hurt, hit in the back of the head by a Bludger ..."
-- Lee Jordan, commentating on Harry's (and Katie's) first Quidditch match (PS11)
Oliver Wood considered her to be a superb Chaser (PA8), along with Angelina Johnson and Alicia Spinnet, who are a year older than Katie (OP26). As a member of the team, Katie has taken her share of rough play, including a time when Montague of Slytherin intentionally grabbed her head instead of the Quaffle, nearly unseating her (PA15). Katie, along with Alicia and Angelina, joined Dumbledore’s Army (the DA) (OP17).
During his first practice as Gryffindor Keeper, a nervous Ron passed her the Quaffle so hard that she missed the catch and was hit in the face, causing a nosebleed. Fred then accidentally gave her what seems to have been the wrong end of a Nosebleed Nougat — the one that causes nosebleeds rather than arresting them — so that eventually practice had to be called off when Katie didn’t stop losing blood (OP14).
Katie had more bad luck in the fall of 1996 when she was placed under the Imperius Curse by Madam Rosmerta to carry a cursed opal necklace to someone at Hogwarts. The parcel broke open as she argued with her friend Leanne. When Katie touched the necklace her body levitated as she writhed in pain, and then collapsed (HBP12); she had to be evacuated to St. Mungo’s Hospital (HBP13) and didn’t return until April.
a talented Quidditch Chaser
Katie is usually short for, or a nickname derived from, the given name Katherine. It may come from the Greek name ικατερινη (Aikaterine) / ‘Εκατερινη (Hekaterine), meaning "each of the two", or from a Coptic name meaning "my consecration of your name". Through Christianity it became associated with the Greek word καθαρος (katharos), meaning "pure" (Behind the Name).
Bell may be an occupational name for a bellringer or bell foundry worker, or the name for someone living "at the bell" (an actual bell or a building/pub called "The Bell"). It can also derive from the medieval given name Bel (meaning "handsome") (Internet Surname Database).
In the movie of Harry Potter and the Half-Blood Prince, the role of Katie Bell was played by Georgina Leonidas.
Lexicon list of Chasers
From the Web
Harry Potter Wiki: Katie Bell