Final Fantasy IV offers twelve playable characters, each with a unique, unchangeable character class. During the game, the player can have a total of five, or less, characters in the party at the same time. The main character, Cecil Harvey, is a dark knight and the captain of the Red Wings, an elite air force unit of the kingdom of Baron. He serves the king alongside his childhood friend Kain Highwind, the commander of the Dragoons. Rosa Farrell is a white mage/archer and Cecil's love interest. The Red Wings' airships were constructed by Cecil's friend, the engineer Cid Pollendina.
During his quest, Cecil is joined by others, including Rydia, a young summoner from the village of Mist, Tellah, a legendary sage of Mysidia, Edward Chris von Muir, the prince of Damcyan and a bard, and Yang Fang Leiden, the head of the monks of Fabul. The other characters are the black mage Palom and white mage Porom, twin apprentices from the magical village of Mysidia, Edward "Edge" Geraldine, the ninja prince of Eblan, and lastly Fusoya, the guardian of the Lunarians during their long sleep.
Cecil and Golbez are the respective hero and villain representing Final Fantasy IV in Dissidia: Final Fantasy. Cecil is voiced by Shizuma Hodoshima in the Japanese version and by Yuri Lowenthal in the English version; Golbez is voiced by Takeshi Kaga in the Japanese version and by Peter Beckman in the English version. Kain is scheduled to join the cast of Dissidia's sequel, Dissidia 012 Final Fantasy, and will be voiced by Kōichi Yamadera in the Japanese version.