Monsters
Monsters are creatures that spawn within the game that players can kill in order to gain experience to level up. Some monsters will drop items when killed, such as consumables, quest items, gears and many more. Because there are many different type of monsters, Ragnarok Online categorized them with Race, Elements, and Size so players can take advantage with appropriate equipment and skills. There are also Boss type monsters or MVP, which are ten times stronger than regular monster and can drop very valuable items. Most of the monsters you find within the game is a Free For All, unless the ones that player summon which can fall under Kill-Stealing rule.
Contents
Champion Monsters
These monsters have an aura surrounding them and more strength as well as HP than the regular ones. They will have the same names as the original monsters but they will a different prefix or suffix depends on what they are based on. All champion monsters have 20% larger sprites, 25% more attack, 5x item drops, 2,5x base exp, 9x job exp, only perform autoattack, and cant use any skills.
There are five types of champion monsters in the game:
- Swift (Alt: Erratic, Prefix): Lv150 aura. These monsters have higher Movement Speed, five times their Max HP.
- Solid (Alt: Armored, Prefix): Green aura. These monsters have lower Movement Speed, ten times their Max HP.
- Ringleader (Alt: Master, Suffix): Blueish appearance. These monsters summon two of the regular versions of themselves. Additionally, they have five times their Max HP.
- Furious (Alt: Angry, Prefix): Reddish appearance. These monsters have higher ASPD, five times their Max HP and slightly higher Hit.
- Elusive (Alt: Nimble, Prefix): Light blue aura. These monsters have five times the health.
Race
A Race is an attribute of Monsters. There are eleven races present in the world of Ragnarok Online:
- Angel
- Brute (Animal)
- Demi-Human
- Demon (Devil)
- Dragon
- Fish
- Formless
- Insect
- Plant
- Player (Human)
- Undead
Like Element and Size, players can increase the damage dealt to monsters of varying races, and reduce the damage that they take from various races of monsters. Certain equipment and Cards can be used to gain these advantages.
Size
Size is an attribute of Monsters. There are three sizes present in the world of Ragnarok Online:
- Large (Big)
- Medium
- Small
Human playable character are by default, Medium sized when engaging each other in a PvP environment. However, if a character is adopted, they are considered Small sized. Doram playable character are considered Small sized.
Most weapons suffer size-penalties against certain sizes, although it is only minor when looking at damage on a grand scale.
| Weapon | Small | Medium | Large |
|---|---|---|---|
| Bare Handed | 100% | 100% | 100% |
| Dagger | 100% | 75% | 50% |
| 1H Sword | 75% | 100% | 75% |
| 2H Sword | 75% | 75% | 100% |
| Spear | 75% | 75% | 100% |
| Spear (Peco Peco / Gryphon Mounted) | 75% | 100% | 100% |
| Spear (Dragon Mounted) | 100% | 100% | 100% |
| Axe | 50% | 75% | 100% |
| Mace | 75% | 100% | 100% |
| Rod | 100% | 100% | 100% |
| Bow | 100% | 100% | 75% |
| Katar | 75% | 100% | 75% |
| Book | 100% | 100% | 50% |
| Knuckle | 100% | 75% | 50% |
| Instrument | 75% | 100% | 75% |
| Whip | 75% | 100% | 50% |
| Gun | 100% | 100% | 100% |
| Huuma Shuriken | 75% | 75% | 100% |
Mini-Boss
The term Mini-Boss is to present a boss-like monster but not exactly as MVP type monster. Mini-bosses are generally stronger and have more HP than normal monsters, with some being able to use skill and spawn minions. These monsters are considered "Mini-Boss" the limited quantity of these monsters can spawn in a map and are usually spawn longer than regular monsters.
Monsters that can be classified as Mini Bosses are:
- Angeling
- Of Thanatos Monsters: Desperos Of Thanatos, Dolor of Thanatos, Maero of Thanatos, Odium of Thanatos
- Arc Angeling
- Cat O' Nine Tails
- Chimera
- Dark Illusion
- Deviling
- Dragon Fly
- Eclipse
- Executioner
- Gemini-S58
- Ghostring
- Gryphon
- Hellion Revenant
- Hydrolancer
- Mastering
- Maya Purple
- Mutant Dragonoid
- Mysteltainn
- Ogretooth
- Toad
- Ungoliant
- Vagabond Wolf
- Vocal
- Zealotus
MVP
MVP stands for Most Valuable Player that literally has no significant relations with the game but this is what player usually use to classify a boss type monsters. These monsters are generally much more stronger than regular monsters and will give very valuable loots. MVPs only spawn at certain times, not all MVPs have the same spawn time and they are ranged in between once per hour into 24 hours. Countdown will starts after the MVP is killed. If the player dies at the same time as the MVP, and there's no one around the MVP, the game will randomly choose someone within the map to receive the reward. Whoever hit the MVP first will have the top priority of the loots, so even if someone KS and you hit the MVP first, the loot will be given to you when it dies.
There will be 
sign when you killed the MVP. MVPs are free for all in most cases but for those special MVPs that required to be summon are only eligible to the person who summoned them, kill stealing summoned MVP will result in jail time.
MVPs can also use deadly skills that can one-shot players if they are unprepared. They can also summon slaves to help them fight, in some cases the mobs are the same but depending on which MVP, the summoned slaves may be different.
When an MVP is killed, Tomb 
may spawn where the MVP dies. Talking to the tomb will give you information such as, time of death and the player who killed it. The tomb doesn't give information as to what time and where the MVP will spawn next time.
