Lucky Charms cereal was created by a product developer named John Holahan. He created a prototype by combining Cheerios with chopped-up pieces of Circus Peanuts. When Lucky Charms debuted in 1964, the oat cereal pieces were shaped like bells, fish, arrowheads, clovers, and the letter “x.” The original marshmallow bits, sometimes referred to as “marbits,” were shaped like green clovers, pink hearts, orange stars, and yellow moons. The cereal’s beloved mascot Lucky the Leprechaun debuted on St. Patrick’s Day in 1964. In 1967, the cereal pieces were sweetened with a sugar frosting. In 1975, the first new marbit was introduced — a blue diamond. More than 40 different marbits have been introduced over the years. In fact, the only remaining original marbit is the pink heart. One of the most recent additions is 2017’s magical unicorn marbit. Today, Lucky Charms remains a popular breakfast cereal, so there's a good chance that even more marbits will be introduced in the future.