•
Dick Christie as Ted Lawson - Jamie's father, Joan's husband and Vicki's creator. A robotics engineer who originally created the Vicki robot as a domestic servant with a female child's appearance. •
Marla Pennington as Joan Anderson Lawson - Ted's wife and Jamie's mother. Joan, more than anyone else on the show, regards Vicki as a real person. •
Jerry Supiran as Jamie Lawson - The 10-year-old son of Ted and Joan. •
Emily Schulman as Harriet Brindle - The nosy neighbors' daughter who has a crush on Jamie. •
Tiffany Brissette as Victoria "Vicki" Ann Smith-Lawson - A robot modeled after a real human girl. The robot was a Voice Input Child Identicant (V.I.C.I.), but was nicknamed Vicki. She has realistic hair and skin. She possesses superhuman strength and speed and runs on atomic power. Vicki has an access panel in her back, an electrical outlet in her right armpit, and an
RS-232 serial port under her left armpit. Vicki's artificial intelligence is not perfect; she is incapable of
emotion, speaks in a monotone voice and interprets most commands literally. She does manage to blend into the real world to a point. Vicki attends school, and no one but her family members and a few trusted friends know her secret. Occasionally, Vicki had rare abilities that seemed to only appear in one or two episodes, such as elongating her neck to reach a door's peephole, shrinking her size to become as small as a doll or making herself ten feet tall to get noticed by everyone. Somehow, she could also channel enough electricity through her hands to jump-start a car (or with more control, serve as a
defibrillator to save the life of a person suffering a
heart attack). One recurring theme was that Vicki had a super-powered learning system which enabled her to improve something such as a new detergent or to greatly increase the gas mileage of cars, which Jamie often saw as a chance to get rich quick, only to find her improvements were not perfect. Vicki lives in a cabinet in Jamie's bedroom, and becomes more human-like over the course of the show.
Recurring • Kelly Britt as Mrs. Fernwald - the bothersome social worker. •
William Bogert as Brandon Brindle - Harriet's father. Becomes Ted Lawson's boss after stealing Ted's ideas. Also a neighbor to the Lawsons. •
Edie McClurg as Bonnie Brindle - Harriet's mother and Brandon's wife. Written out after the second season after McClurg joined the cast of
The Hogan Family, though Bonnie appears one more time in a third-season episode. •
Alice Ghostley as Ida Mae Brindle -Brandon's outspoken, know-it-all sister who is nearly identical to his wife Bonnie. • Paul C. Scott as Reggie Williams - Jamie's best friend and sometimes rival. • Lihann Jones as Jessica - Jamie's sometime girlfriend. • Daryl Bartley as Warren Enright - Jamie's sometime school friend. • Tiffany Brissette as Vanessa - Evil robot who looks identical to Vicki, but does not speak in a monotone (seasons 3–4). ==Reception==