According to the February 22, 1963, edition of TV Guide, Pebbles was born at the Bedrock Rockapedic Hospital on February 22, 10,000 BC. That particular year was never actually cited within the show itself; most versions of the show put the Flintstones' era as around 1,000,000 BC.
As an infant, Pebbles quickly became lifelong best friends with her next-door neighbor, Bamm-Bamm Rubble.2
As a pre-teen, Pebbles was an excellent baseball player, which led to a misadventure involving her father, as seen in the 1978 primetime special The Flintstones: Little Big League.3
By the time she was a teenager, Pebbles began dating Bamm-Bamm and was noted for getting their friends into various misadventures, mostly due to sharing her dad's penchant for schemes that would inevitably backfire (such as causing a strike by Bedrock's city employees when she was elected honorary mayor for a week4). She and her friends attended Bedrock High School; Pebbles had a catchphrase similar to her father's: "Yabba-Dabba-Doozie!"5
As an adult, Pebbles pursued a career in advertising and married Bamm-Bamm.6 After this, the newly married couple moved to Hollyrock, a fictional, prehistoric version of Hollywood, California. They had a son named Chip and a daughter named Roxy, who were fraternal twins.7
Throughout the different iterations of the Flintstones series, Pebbles' age has varied significantly, depicted as an adolescent in one spin-off and reverting to an infant in the next. Listed approximately in order of release, Pebbles has appeared in the following Flintstones incarnations:
In 1963, when Hanna-Barbera decided to add a baby to the show, their first choice was a boy named Fred Junior. When Ideal Toy Company heard this, company executives approached Hanna-Barbera with a proposal to change the baby character to a girl for which the toymaker could create a doll, and Hanna-Barbera agreed.
Pebbles, in her conventional toddler incarnation, is sometimes seen in the various Post Fruity Pebbles and Cocoa Pebbles cereal commercials that have been produced over the years. Pebbles also appears on the packages of "Flintstones" children's vitamins and with Bamm-Bamm on the packages of "Flintstones" toddler vitamins, which are manufactured by Bayer Healthcare (formerly Miles Laboratories).
Hollyrock-a-Bye Baby, 1993, ABC ↩
"Little Bamm Bamm," The Flintstones, season 4 ↩
Woolery, George W. (1989). Animated TV Specials: The Complete Directory to the First Twenty-Five Years, 1962-1987. Scarecrow Press. pp. 155–156. ISBN 0-8108-2198-2. Retrieved 27 March 2020. 0-8108-2198-2 ↩
"Mayor May Not," The Pebbles and Bamm-Bamm Show, CBS ↩
The Pebbles and Bamm-Bamm Show, 1971-1972, CBS ↩
I Yabba Dabba Do, 1993, ABC ↩
Solomon, Charles (1993-02-06). "Pebbles, Bamm-Bamm Plan Stone Age Wedding in Bedrock". The Los Angeles Times. Retrieved 2010-09-10. https://www.latimes.com/archives/la-xpm-1993-02-06-ca-892-story.html ↩
"Jean Vander Pyl; Cartoon Voice of Wilma Flintstone". The Los Angeles Times. 1999-04-15. Retrieved 2010-09-10. https://www.latimes.com/archives/la-xpm-1999-apr-15-mn-27591-story.html ↩