 Culex, the boss behind the sealed door in Monstro Town, is said by  many to be a character from Final Fantasy II. The music in the  background during his sequences is also from the Final Fantasy  games. With the advent of Final Fantasy II in America, we have  learned what most new all along: that was a load of bull. However  Culex was indeed meant to share some traits with Final Fantasy final  bosses in general.