The term RC Competitor is a reference to the soft drink Pepsi, which has five letters. Pepsi is a carbonated soft drink that was first created in 1898 by Caleb Bradham and is now one of the most popular drinks in the world. It is known for its iconic blue and red logo and is often used as a generic term for any type of cola. Pepsi is a major competitor to Coca-Cola, another popular carbonated soft drink.