Carla grew up in Glass Shard Beach, New Jersey, where she began her relationship with Stan Pines after he left-hooked a man attempting to steal her purse at the Bijou Theater. The two frequented their favorite 50's-themed 70's diner, The Juke Joint, dancing and enjoying the atmosphere, until she fell in love listening to local hippie Thistle Downe, leading Stan to believe she was being controlled hypnotically by his songs. Carla grew to despise Stan after he drove Downe's car into a ravine, though he still fails to see why she was angered by this.
Carla first appears in Stan's flashback in "Boyz Crazy," remembering happier times as the two dance at the Juke Joint. Their dance is interrupted upon the introduction of Thistle Downe; Carla affectionately embraces him in a hug before, in Stan's recollection, speeding off into the sky with Thistle, leaving a rainbow trail in their wake.
In "Dreamscaperers," Carla appears in a memory held in Stan's mindscape, recalling the night they met as teenagers. While waiting in line at the cinema, a mugger makes an attempt to grab her purse, resulting in Stan's successful intervention followed by her bestowing him a loving kiss on the cheek.
Little is known of Carla's personality, except that she liked dancing when she was with Stan, and enjoyed going to the movies. She later adopted a hippie style.
Carla was a voluptuous woman with long, curly brown hair, long eyelashes, and olive skin tone. She wore a purple and white flower in her hair, gold triangle earrings, a magenta shirt with white trimmings around the sleeves and collar, a matching belt, rose red sandals, and her trademark, purple hotpants. After dumping Stan, her hotpants became purple bell-bottoms.
When she first met Stan, she was wearing a pink poodle skirt and a long sleeved, aqua blue v-neck. She had the same kind of flower in her hair, but wore it on the opposite side.
- She is the third Carla to appear on the show, after the Carla mentioned in the Tent of Telepathy commercial and cryptogram in "The Hand That Rocks the Mabel" (though it is possible that they are the same person), and the co-host of Cash Wheel from "Boss Mabel."
- She and Lazy Susan are the only known women to have ever dated Stan Pines.