That class didn't exist when I played. Whats it's playstyle?
Luminous is the final Hero who fought against the Black Mage. He's a Magician and uses Light and Dark type mobbing skills (doesn't get any 1 on 1 skills, I believe). He levels very quickly because he has a ton of easy job quests that give tons of exp and gets free methods of travel to places up until about level 75. He's quite fun to play and currently is the easiest way of gaining Tempest Coins, which are used to buy powerful level 100 equipment and more.