Because of his reflective golden armor, Goldor is highly resistant to magic.
Level 5 magic will do about 800 damage. Physical attacks work best. It is recommended to have at least one Dark Knight in the party while fighting this boss, so they can use the powerful Souleater ability. At Job Lv. 5 or above, Souleater will do 950 - 1,100+ damage to Goldor.
Goldor is a portmanteau of "gold" and the French word or, which also means "gold". Gold is a chemical element with the symbol Au and atomic number 79. It is a dense, soft, malleable and ductile metal with a bright yellow color and luster, the properties of which remain without tarnishing when exposed to air or water.