Question: The animated character who later used the slogan "The one and only cereal that comes in the shape of animals" to promote Crispy Critters was originally created to promote which cereal?

<P0-S0> Linus the Lionhearted is an American animated television series featuring a main character of the same name. <P0-S1>  The character was created in 1959, by the Ed Graham advertising agency, originally as a series of ads for General Foods' Post Cereals. <P0-S2>  At first, Linus was the spokesman for the short-lived Post cereal "Heart of Oats" (a Cheerios imitation). <P0-S3>  Eventually, the lion was redesigned and reintroduced in 1963, to sell Crispy Critters, which featured Linus on the box. <P0-S4>  The ads were so popular that a television series was created in 1964 (with General Foods as sponsor), and ran on the CBS network until 1966, then reruns [in color] aired on ABC from 1966, until it was cancelled three years later. <P0-S5>  A coloring book was published which detailed the adventures of So-Hi going on a scavenger hunt in order to break a curse on a two-headed bird, who is then transformed into a boy due to So-Hi's dedication. <SEP> <P1-S0> In animation, a model sheet, also known as a character board, character sheet, character study or simply a study, is a document used to help standardize the appearance, poses, and gestures of an animated character. <P1-S1>  Model sheets are required when large numbers of artists are involved in the production of an animated film to help maintain continuity in characters from scene to scene, as one animator may only do one shot out of the several hundred that are required to complete an animated feature film. <P1-S2>  A character not drawn according to the production's standardized model is referred to as off-model. <SEP> <P2-S0> Miss Caribbean UK is an Afro-Caribbean beauty pageant held in the United Kingdom. <P2-S1>  It was created by Clayton Brown and Jacqui Brown in 2014. <P2-S2>  The stated aims of the pageant are to promote, educate, inspire and celebrate the historical and cultural impact of the Caribbean within the United Kingdom. <P2-S3>  The organisation has adopted the slogan "Positively Promoting the Caribbean"™ aiming to inspire, inform and unite all the different Caribbean countries under one umbrella. <P2-S4>  The event uses a pageant to promote, educate, inspire and celebrate the historical and cultural impact of the Caribbean within the United Kingdom. <P2-S5>  By getting this message to our communities in the UK, we hope realise our objective, which is to, Positively promote the Caribbean. <SEP> <P3-S0> Crispy Critters was a breakfast cereal manufactured by Post Cereal starting in 1963. <P3-S1>  The sweetened cereal, made of oats, consisted of animal-shaped pieces akin to animal crackers. Television commercials featured a cartoon lion, Linus the Lionhearted, voiced by Sheldon Leonard, with the slogan "The one and only cereal that comes in the shape of animals," sung to the tune of "Trepak" from Tchaikovsky's "The Nutcracker" ballet. <P3-S2>  The next year, Linus was spun off into a Saturday-morning cartoon show, which ran for two years on the CBS network, then reran on the ABC network for three more until 1969. <P3-S3>  After a decline in popularity, the cereal was discontinued.