A Post rice cereal relaunched around a cartoon.

Fruity Pebbles grew out of an older Post cereal. English Wikipedia, citing the recollections of Larry Weiss, then a product group manager at Post Cereals, says Fruity Pebbles and its companion Cocoa Pebbles were reintroductions of a Post children’s cereal called Sugar Rice Krinkles. According to the same account, Weiss licensed the use of The Flintstones for cereal from Hanna-Barbera Productions, the studio behind the animated series, in an attempt to revive Post’s children’s cereal business. Wikipedia notes that Hanna-Barbera is now part of Warner Bros. Animation, and says the brand went ahead despite internal concern inside Post that it would be a passing fad.

The names took some working out. Wikipedia, again drawing on Weiss, says the working names for the two cereals were Flint Chips and Rubble Stones, chosen to match the look of the cereal and the Stone Age world of the cartoon. Frank Corey, creative head for the Post cereal business at the advertising agency Benton & Bowles, suggested the alternatives Fruity Pebbles and Cocoa Pebbles, and those were adopted.

The launch dates differ slightly between sources. Wikipedia’s infobox dates the cereal to 1969 on the West Coast and October 1971 nationally, and its text says Post introduced Pebbles in the United States on 20 October 1971, citing an archived Post Heritage timeline. It also says Fruity Pebbles appeared on the West Coast in 1969 simply as “Pebbles” before national distribution under the name Fruity Pebbles, and that Cocoa Pebbles followed as a second flavour in 1970. A footnote in the same article points to newspaper advertising in Kalispell, Montana, and Santa Cruz, California, in May and June 1970, which shows both cereals were advertised in selected markets before the national date.

The product kept its rice base. Wikipedia says the basic product retained the Sugar Rice Krinkles form, using the existing expander process and Post’s production facilities in Battle Creek, Michigan, the town where C. W. Post had founded the company in 1895. It describes Fruity Pebbles as crisp rice cereal bits in a variety of fruit flavours and Cocoa Pebbles as chocolate-flavoured crisp rice.

Post Cereals, Kraft, Ralcorp, Post Holdings.

Pebbles belongs to the same corporate line as Post’s older cereals. Wikipedia’s article on Post Consumer Brands says the company began as the Postum Cereal Company, founded by C. W. Post in Battle Creek in 1895, which became General Foods in 1929. When Pebbles was launched, General Foods was the parent of Post Cereals. Wikipedia says Philip Morris Companies acquired General Foods in 1985 and Kraft Inc. in 1988, merging them as Kraft Foods Inc., and that the cereal unit was later sold to Ralcorp, a purchase Ralcorp agreed in 2007 and, Wikipedia says, completed on 4 August 2008.

Ralcorp did not keep the cereals for long. Bloomberg reported on 14 July 2011 that Ralcorp would spin off its Post Foods unit, and Wikipedia, citing a New York Stock Exchange notice dated 7 February 2012, says the spin-off was completed that day with the listing of Post Holdings, Inc. Post Holdings has owned Pebbles since 2012. Wikipedia’s Pebbles infobox names Post Holdings as the current owner and Post Consumer Brands as the producer.

The cereal company took its present name in 2015. Wikipedia says that after Post Foods bought MOM Brands, the former Malt-O-Meal company, it rebranded as Post Consumer Brands, headquartered in Lakeville, Minnesota. Pebbles sits in that portfolio beside Grape-Nuts, the cereal C. W. Post developed in 1897, and Honey Bunches of Oats.

The characters themselves remain licensed rather than owned. The footer of the official Pebbles website, fetched in October 2026, carries a 2026 copyright notice for Post Consumer Brands, LLC, and states that The Flintstones and all related characters and elements are © and ™ Hanna-Barbera. The site describes itself as intended for audiences in the United States.

Design and documentation.

The American breakfast-cereal box works as a small poster that sits on the kitchen table every morning. Its front panel usually carries a name in large, often hand-drawn lettering, a photograph or painting of a filled bowl, and in many cases a cartoon character who belongs to the brand rather than to any one advertisement. Those characters move between the box, television commercials, websites and promotions, so a single figure can carry a brand’s voice across decades and several owners.

The back and side panels do a different job. Over the years they have held games, maps, cut-outs, recipes and offers, giving a reader something to look at over breakfast. Colour does much of the remaining work: a box is meant to be recognised quickly on a long supermarket shelf, so brands tend to hold on to one dominant colour and a recurring slogan.

Each guide in this group sets out who made the cereal, who owns it now and how its box, characters and advertising have been described in dated sources, and marks plainly what rests only on the company’s own word.

A cereal named after a cartoon baby.

The brand’s identity is borrowed from a cartoon town. Wikipedia says the earliest Pebbles commercials, produced by Post’s agency with the cooperation of Hanna-Barbera, showed the animated Fred Flintstone and Barney Rubble eating the cereal with live-action children around a household breakfast table, while others placed the pair and their wives in Bedrock, the cartoon’s Stone Age town.

It says the characters Pebbles and Bamm-Bamm, the children of the Flintstones and the Rubbles, became more prominent in the advertising in 2009; that from 2010 to 2012 the agency Burns Group made stop-motion commercials with the line that the cereal “rocks your whole mouth”; and that since 2014 the advertising has invited viewers to pick a side, Team Cocoa or Team Fruity. In May 2010, the ABA Journal reported that the wrestler Hulk Hogan had sued Post over a Cocoa Pebbles commercial featuring a wrestler called Hulk Boulder.

Wrestling gave the name another life outside advertising. In an article dated 16 July 2012 on WWE.com, Zach Linder listed among The Rock’s memorable Raw moments the occasion on which Dwayne “The Rock” Johnson called John Cena a bowl of Fruity Pebbles; Wikipedia connects the nickname to Cena’s brightly coloured shirts.

The official site keeps the cartoon’s voice at the front. The Pebbles website, fetched in October 2026, uses the line “Less Blah, More Yabba Dabba Doo”, borrowing Fred Flintstone’s catchphrase, and says that Fruity and Cocoa Pebbles flavours “feed big imaginations”. The same site lists Cocoa Pebbles alongside Fruity Pebbles and features other foods and brand partnerships under the Pebbles name.

For a design guide, Fruity Pebbles shows how a licensed cartoon world can become the whole frame of a cereal brand, with the characters, catchphrase and Stone Age setting all supplied by the licence and the cereal itself supplied by Post. Compare it with Trix, a General Mills fruit-flavoured cereal with a rabbit of its own, and Grape-Nuts, Post’s founding cereal. For this guide we use Bedrock orange, lemon yellow and berry purple on cream with a rounded sans, an unofficial interpretation; no product or logo is reproduced.

Keep Fruity Pebbles’s identity on hand — save it to a board in the Made Good inspiration library.