And so we face the first of the Four Fiends. In Japanese, the Fiends are referred to as the “Four Heavenly Kings/Emperors,” guardians of the cardinal directions in Buddhism. Some other groups of four in other games and anime that are also called by this phrase. The idea is more or analogous to the Western idea of Guardians of the Watchtowers, sometimes embodied by the Archangels Uriel, Gabriel, Rapheal, and Michael.
Buuuut since most ten-year-olds from 1992 weren’t dabbling in Hermetic magic, “The Four Fiends” or “Four Fiends of Elements” or “Archfiends” is just fine. ;)
Maybe more importantly, they echo the four elemental bosses from Final Fantasy I.
Also, they’re named for demons in Dante’s Inferno, so we’re braiding together all our mythologies here.