Biggs and Wedge, inspired by two Star Wars characters of the same name, appear in numerous games as minor characters, sometimes as comic relief. The later games in the series feature several males with effeminate characteristics. Recurring creatures include Chocobos and Moogles. Chocobos are large, often flightless birds that appear in several installments as a means of long-distance travel for characters. Moogles, on the other hand, are white, stout creatures resembling teddy bears with wings and a single antenna. They serve different capacities in games including mail delivery, weaponsmiths, party members, and saving the game. Chocobo and Moogle appearances are often accompanied by specific musical themes that have been arranged differently for separate games. Final Fantasy is also well known for its enemy monsters and creatures.
The series affected Square's business on several levels. The commercial failure of Final Fantasy: The Spirits Within resulted in hesitation and delays from Enix during merger discussions with Square. Square's decision to produce games exclusively for the Sony PlayStation—a move followed by Enix's decision with the Dragon Quest series—severed their relationship with Nintendo. Final Fantasy games were absent from Nintendo consoles, specifically the Nintendo 64, for seven years. Critics attribute the switch of strong third-party games like the Final Fantasy and Dragon Quest games to Sony's PlayStation, and away from the Nintendo 64, as one of the reasons behind PlayStation being the more successful of the two consoles. The release of the Nintendo GameCube, which used optical disc media, in 2001 caught the attention of Square. To produce games for the system, Square created the shell company The Game Designers Studio and released Final Fantasy Crystal Chronicles, which spawned its own metaseries within the main franchise. Final Fantasy XI's lack of an online method of subscription cancellation prompted the creation of legislation in Illinois that requires internet gaming services to provide such a method to the state's residents.
Magic is another common RPG element in the series. The method by which characters gain magic varies between installments, but is generally divided into classes organized by color: "White magic", which focuses on spells that assist teammates; "Black magic", which focuses on harming enemies; "Red magic", which is a combination of white and black magic, "Blue magic", which mimics enemy attacks; and "Green magic" which focuses on applying status effects to either allies or enemies. Other types of magic frequently appear such as "Time magic", focusing on the themes of time, space, and gravity; and "Summoning magic", which evokes legendary creatures to aid in battle and is a feature that has persisted since Final Fantasy III. Summoned creatures are often referred to by names like "Espers" or "Eidolons" and have been inspired by mythologies from Arabic, Hindu, Norse, and Greek cultures.