Amber, listed as "PJ" in the movie’s credits for some reason, is an incidental character in the Jimmy Neutron series. She has an actual plot role (if a tertiary one) in the season 3 episode Who's Your Mommy, which actually makes her one of the most used incidental characters. For sake of disambiguation I’m going to assume her initials are "A. P. J.".

Tags: A_P_J_JN, blonde hair, medium hair, glasses, cyan shirt, long shirt, t-shirt, print shirt, four-leaf clover, dimgrey pants, shoes,
Eyes: Green Eyes or Blue Eyes (It’s really strange for a 3D model based character to change eye color like this, but she does!)
Negative: Shorts,
Use or Negative: 3D
If using 3D: Increase weight on dimgrey pants (if not, it likes to mistake her shirt for a dress), add "chibi" (helps get her proportions accurate)

Trained on 25 shot of the show, plus 2 shots of the movie I could find of her. Still taking requests for Jimmy Neutron characters.