Fighter of the Zodiac

A Fighter of the Zodiac is a playable character in the Zodiac games. Debuting in Zodiac Champions, the term is used often in the story mode to designate those chosen by the Zodiac to defeat the evil that threatens the world.

Like with the title of "Fighter of Lapis", there does not seem to be a requirement to be a Fighter of the Zodiac. While it is described as one chosen by the Zodiac, the people chosen by it seem to be random and without a requirement.