Nazz is the hip one of the Cul-de-Sac and the one whom most boys are likely to have a crush on (except forJimmy and Rolf). Nazz's vocations consist of both babysitter (she sat for Eddy in one episode; he thought he was on a date with her) and the captain of Peach Creek Junior High's cheerleading squad. Two other cheerleaders are Sarah and Jimmy, whom Nazz sometimes hangs out with when nobody else is around (such as in "Boys Will Be Eds" and "High Heeled Ed"). She is equally sweet to everyone around her, even to outcasts like the Eds. There are hints at her holding romantic affections for Eddy and for possibly crushing on Kevin, whom she is most often seen with.
Nazz has blonde hair and has the personality traits of a "dumb blonde", though at times she is shown to be very intelligent ("A babysitter's gotta know this stuff"). She does have her "airhead" moments, like during the "Ponce de la Ed" scam. She thought a disgusted and sarcastic Kevin was actually ordering a barf bag, to which she responded, "Where's that on the menu?" Also, when Rolf tried to help Kevin woo Nazz by shaving her name into Victor's pelt, she thought that Victor changed his name to Nazz.
Nazz is shown to be very "in" with the way she dresses and could easily be elected best-dressed in the Cul-de-Sac. She wore a fashionable outfit in the Christmas Special that attracts Eddy. She even invites him in her house, offers him eggnog, and puts a mistletoe in between them in the attempt to make him kiss her. Eddy is known to occasionally flirt with Nazz. She kindly tolerates his advances, but is not one to be won over by them. In Ed, Edd n Eddy's Big Picture Show although she at first seems to admire Eddy's brother, she is the first to say "Eddy's brother is a jerk" and change her perspective of him.
Old Nazz from "Take This Ed and Shove It" wears a kilt and a small poncho, has acquired glasses, and feeds bread crumbs to the birds. She has retained her blonde hair and her youthful attitude, calling the birds "little dudes". It also appears she still wears her signature black T-shirt. Old Jonny claims that she's still "got it", butOld Eddy does not know what Jonny is talking about (A confused Eddy thought that was liver spots).
- It was revealed in a flashback in "Every Which Way But Ed" that she was once very obese. She probably lost the weight by watching aerobic tapes and doing the exercises.
- She appears in most episodes, but often has no dialogue or plays a minor role. The only episodes where Nazz is involved in the plot are "To Sir with Ed", "High Heeled Ed" and "Boys Will Be Eds".
- Nazz is the only character besides The Kankers to have her last name revealed, which is Van Bartonschmeer.
- It is revealed in "Urban Ed" and "The Day the Ed Stood Still" that Nazz knows karate.
- It is revealed that she knows Eddy's Brother and isn't scared of him; she once acted interested in him.
- Nazz plays two instruments, the sousaphone tuba (badly), as revealed in "Hands Across Ed", and the violin, as shown in "Smile for the Ed".
- Edd seems to be the Ed that Nazz is most fond of, as he was the first character she'd kissed in the series in "The Day the Ed Stood Still" and got him to dance with her at the school dance in "May I Have this Ed?" In "Cleanliness Is Next to Edness" she offered a filthy and insane Edd her bathroom to shower off his muck. Despite all this, however, she has been seen abusing him - usually because of one misunderstanding or another. In "Urban Ed", she karate chops him, probably not realizing he was trying to help her. In the special, "The Eds are Coming", she slaps him, even though he was once again trying to help her (though she was just angry at that time). These abuses, however, are also applied to the other Eds due to Eddy's scams going haywire.
- In many dubs, her name is Jazz.
- The only boys Nazz ever kissed in the show were Edd in "The Day the Ed Stood Still" and Eddy in Ed, Edd n Eddy's Big Picture Show.
- Nazz's character has had three voice actors throughout the course of the show, more than any other character.
- Nazz knows how to yodel, and her voice is so powerful that it is able to break glass, porcelain, and Ed.
- These are the grades of her report card as seen in "Mission Ed-Possible".
- Math: A
- Science: B+
- English: C-
- Cheerleading: A+
- History: B-
- Art: C+
- Cooking: D
- In the episode, "It Came From Outer Ed" you can hear her muttering "But I'm allergic!" Her quote is cut off after Rolf shuts the clam. Nazz is possibly allergic to shellfish, though she has yet to show any side-effects.
- This makes her the only character (besides Ed) to have allergies.
- Nazz's last name suggests that she might have Dutch or German heritage.
- Nazz never mentions anyone from her family except her Aunt Marion and her mother. Due to the fact that her bathroom is filled with ladies' underwear, it is questionable if her father lives with them. Her mother could be divorced from him or her father is always away, or no one bothered to clean up the bathroom at the time. Her father might have a separate bathroom for himself.
- Nazz is the only female character that has gathered affection (besides the Valentine's Day love fiasco inEd, Edd n Eddy's Hanky Panky Hullabaloo) from boys.
- In "See No Ed" and Ed, Edd n Eddy's Big Picture Show, Nazz was shown wearing boxers after losing her pants. In "Boom Boom Out Goes the Ed" and "A Town Called Ed", she wore women's underwear as pajamas.
- Most Mad, Dangerous or Craziest Times: Nazz can be very good-natured, but if her looks are ruined, if she is completely wet and cold when it's late or she doesn't get any obvious attention to another guy too much, she will get very angry and perhaps, aggressive in response. She will also go very crazy if she gets too much attention than she normally gets.
- Nazz is also a physically strong person, as she punched Eddy with enough force to give him a black eye and knock a few teeth out in "In Like Ed", karate chopped Double D in "Urban Ed", and she was also able to kick Eddy so hard he shot backwards into a fire hydrant in "An Ed is Born".
- Nazz is one of the few characters who has never broken the fourth wall. The other characters are the Kankers.