Warrior - Sasuun
Black Mage - Zok
White Mage - Sarina
Warrior - Zeza

I went with the Auto-Name on the GBA Version. With names from NPCs from FFI-XI. I know who Zok is but not the other three. They must be from FFIII or XI. In this Playthrough, I'm trying to Complete it on a low Lv, only gaining Lvs after boss fights. I'm about to get the Ruby Stone from the Earth Shrine at the moment, with all Characters at Lv 7.