The Invisible Girl

Invisible Girl is played by Pamela Anderson who is known for the voice of Stan Lee's Stripperella AKA Erotica Jones.

Story
In her backstory of Superhero Movie, she is a fellow superheroine who is also a member of the Fantastic Four alongside her brother John Storm.

It is implied that she snuck her way in the academy of Xavier's School for the Non-Asian Gifted to have a marital affair with Professor Xavier until she was spotted and dragged in by the jealous Mrs. Xavier, Invisible Girl then blamed her for "not treating her man right", which broke out in a cat-fight between the two superheroines until Xavier's wife gains the upper-hand by hair-grabbing and head-slamming Invisible Girl on her wheelchair, this causes the promiscuous superheroine to throw in the towel and storm out the school.

Appearance
Invisible Girl is an attractive, long blonde haired, blue eyed, make-up wearing, coppertone tanned, hourglass shaped, superheroine, who wears make-up, has pink lips, with the billed height of 170 cm (5' 7"), weighing at 60 kg (133 lb), and most notably her big breast implants that are measured as 34DDs.

She wears a tight-fitting costume that consists of a blue jumpsuit, and black materials such as long gloves, a waist belt, and high-heeled boots. The costumes main function appears to be to further enhance the size of her bust and to stay unzipped at all times to show her ample cleavage.

Trivia

 * Invisible Girl is a spoof of Susan Storm the Invisible Woman of the Fantastic Four, and more specifically, Jessica Alba's rendition.
 * Invisible Girl is the archetypical dizzy blonde bimbo with superpowers, this was Pamela Anderson's previous routine in the adult animated series Stripperella.
 * As her name implies the Invisible Girl has the ability to turn objects, including herself, invisible. But her powers aren't effective enough to fool a psychic.
 * Pamela Anderson previously worked with both Craig Mazin and David Zucker in the film Scary Movie 3 (2003), where she makes another cameo as Becka Kotler.
 * Invisible Girl can be seen on the film's cover dating Dragonfly, who appears to be leering at her "dynamic duo" with his super-stretched arm wrapped around her waist; she on the other hand turned her arm invisible to reach into Dragonfly's popcorn that is covering his crotch.
 * Invisible Girl is depicted in this parody as having the same features as the original Invisible Woman from the Marvel Comics.
 * Pamela Anderson is Caucasian, having blue eyes, and having a bust size that is a full 34DD like the character (even though Anderson has silicone implants).
 * Jessica Alba who is the opposite, being only a natural 34B, is of a Mexican decent, and wears blue-eye contacts for the role of Invisible Woman.
 * Both actresses dye their hair blonde which is the only common trait.