Class
There are eight classes to choose from when creating a character. Each class is allowed to learn different class spells, and has a different growth rate for their characteristics. See damage table for their strengths and weaknesses.
Beginner | Knight | Warrior | Priest | Mage | Craftsman | Jester | Hunter |
 | Beginner Uses a Rolled-up Newspaper as their starting weapon. This class can be played if one wants to try out the Combo system in Seal Online first. After Level 10, the Beginner can choose to take Job Quests to change to one of the below classes. If one continues to play the Beginner class, theAdministrator also gives rewards for playing this hard class. |
 | Warrior Uses Two Handed Sword as their weapon, their striking power and attack speed are higher than Knight. Easiest to level early on in the game. Warrior specialises in the combo technique. Their statistics are primarily strength (STR) and agility (AGI). Primary Stats: Strength, Agility |
 | Knight Uses One Hand Sword as their weapon. They have the highest defensive power among all the classes. However, they will not be able to level as fast as the Warrior at lower Levels. But later on in the game, Knight will level easier. Their statistics are primarily strength (STR) and agile (AGI). Primary Stats: Strength, Agility |
 | Mage Uses Staff as their weapon. The Mage mainly has 2 different element of magic attacks - Fire & Ice. Their only weakness lies in their low defensive power and vitality (HP). Their statistics are primarily intelligence (INT) and wisdom (WIS). Primary Stats: Intelligence, Wisdom |
 | Priest (Cleric) Uses Mace as their weapon. The Priest can either become a support player or choose the Battle Priest route. Priest's buffs become stronger with increment in Magic Power. Their statistics are primarily intelligence (INT), strength (STR) and wisdom (WIS). Primary Stats: Intelligence, Strength, Wisdom |
 | Jester (Clown) Uses Dagger as their weapon. Jester uses ranged attacks and they have spells to boost their attack speed. The Jester can use Darts and Cards to throw at monsters. However, they are not cheap. It is unadvisable for a new player to start off as a Jester. Their statistics are primarily intelligence (INT), strength (STR) and agility (AGI). Primary Stats: Intelligence, Strength, Agility |
 | Craftsman Uses Hammer as their weapon. Craftsman can attack and have crafting skills. However, they have accuracy penalty. It might be hard for a craftsman to level up without the help of a Priest. Their statistics are primarily strength (STR) and luck (LUK). Primary Stats: Strength, Luck |
 | Hunter Uses slingshot as their weapon. The Hunter is the 7th addition to the classes that make up Seal Online: Eternal Destiny. Primary Stats: Strength, Intelligence, Agility |
Class comparison
Class | Solo | Support | Range | Evasion | Attack Power |
| Beginner | Extremely Difficult after level 250 | None | None | Low | Low |
| Warrior | Because of the high attack power and high combos warriors can be considered the best at soloing. | None | None | Average | Highest Attack power damage |
| Knight | The Knight's AoE, high damaging skills, and high defense make it the tank in SealOnline. | Can provide better protection to the weaker party members | None | Average | Good |
| Mage | High damage output, good for soloing, but low defense. Capable of kiting. | None | The Best | Low | Highest Attack power damage if the "element" factor is used appropriately. |
| Priest (Cleric) | Average difficulty depends on the character build. Refer to the class guides for more information. | With buffs and healing priest are the best support class in the game. | No range attacks only heals. | Average depends on the character build. Refer to the class guides for more information. | Average depends on the character build. Refer to the class guides for more information. |
| Jester (Clown) | Jesters tend to do faster damage but can get pricey with the higher level skill "Throw Anything". Capable of kiting. | Can cast Urge and Party Urge. | Good | Second only to Hunter. | With high criticals jester has a chance of doing higher damage at a faster rate. However, higher damage = more expensive. |
| Craftsman | Average difficulty; can solo fine, but may have trouble with low accuracy. | None, can craft items. | Can Throw Bombs, But it's Self-injuring with Weak damage dealt | Good | High damage but Low Attack Speed and Accuracy, Higher level attack skills are weaker than most classes. |
| Hunter | Difficulty depends on the build; full STR solo hunters will have difficulty hunting without a Priest; AoE hunters can hunt mobs effectively, especially at higher levels, but needs high EVA and/or DEF and HP. Capable of kiting. | Bait Toss and Ensnare. | Good | Highest evasion growth of all the classes. | STR-orientated hunters have one of the highest damage output amongst the other classes; INT-orientated hunters have average damage, but affects an area. |
