When you reach level 120, you’ll be able to get new job advancement. This is the last one you’ll ever need, and it’s also the most powerful for any class. Here’s what you need to know about each class’ individual advancement:
White Knights become Paladins, Dragon Knights become Dark Knights, and Crusaders become Heroes. Priests become Bishops, Mages become Arch Mages, Rangers become Bow Masters, and Snipers become Marksmen. Hermits become Night Lords, and Chief Bandits become Shadowers.
In every case, in order to get the Maple Story 4th job, you need to talk to the NPC you spoke to in order to get the 3rd job advancement. Then you’ll be told who to meet to get the 4th job. For Bowmen, the NPC is Legor. For Warriors, it’s Harmonia. For Magicians, his name is Gritto, and for Thieves, it’s Hellin. All 4th job advancement NPCs will ask you to get two items: a Heroic Star and a Heroic Pentagon. They’re dropped by Griffey and Manon, but you can also get them by giving a Secret Letter of Spell scroll to Chief Tatamo in Leafre. You can buy said scroll in the 44th floor of Eos Tower from a someone named Vega. It costs 10 million mesos.
Take Heroic Star and Heroic Pentagon to your 4th job advancement NPC and he’ll give you a new skill book. Talk to him again and he’ll give you your new job. You’ll be rewarded 3 skill points and 5 ability points as well. To get most of your 4th job skills, you have to do quests.