She wears a tight-fitting black leather jacket, tight black long pants, black calf-high boots and brown socks.She did not inherit any of her father's physical features, but she did inherit his coloring (the color of her hair and the color of the eyes).
Vanessa gets frustrated or embarrassed by Heinz Doofenshmirtz’s behavior quite quickly, which is typical for a girl of her age.
She is especially annoyed with her father treating her like a little girl, whether it be by providing an overly girlish birthday party for her or him giving her a doll in her teen years (“I Scream, You Scream”, “Dude, We're Getting the Band Back Together”, “S'Winter”, “Hail Doofania! Despite her annoyance towards her father, Vanessa does appreciate some of what he does for her.
", "Dude, We're Getting the Band Back Together", "Brain Drain").
It is evident that she desires to have a car of her own.
("Finding Mary Mc Guffin") She is or was on her school's swimming team.
She also performed ballet as a young girl and was in a school production ("Finding Mary Mc Guffin").She inherited most of her facial features from her mom.Her clothes are in the basic military Goth fashion, or as her dad called it ("Minor Monogram), "Vampire-Pilgrim-Scuba Diver".Later, the doll falls into the hands of a little girl, and, after mulling over what to do for a moment, she snatches it away; evidently it had much sentimental value to her.When Heinz finds out he happily takes it as a sign that she’s becoming “evil” and Heinz says that they could definitely build on her act of evil (“Finding Mary Mc Guffin”).She has aided in Heinz's schemes on rare occasions, zapping pigeons with a hypnotic device as part of his plan to have them release their fecal waste upon the mayor on one ("Tree to Get Ready") and picking up blueprints for his "Space laser-inator" he would use to control Danville on another ("I Scream, You Scream").