Boss Protocol

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A Boss Protocol monster is one that has a special flag set. Some monsters and all MVPs have this flag set. They have the following attributes:

  • Various skills fail on them;
  • The knock back aspect of skills does not affect them.
  • They detect the Hiding status and any other skill statuses that is similar to it.
  • The time Ankle Snare holds them is reduced.
  • Unaffected by status effects;
    • They cannot be silenced, stunned, poisoned, etc.
    • Exception: Slash can inflict coma on all undead monsters, including bosses. Otherwise, even coma from Tarot Card will not work on monsters with the boss protocol.
  • Affected by all items geared towards "bosses", i.e.;
    • Abysmal Knight Cards increase damage to them by 25%
    • Alice Cards reduce damage dealt by them by 40%

Example for common monsters with Boss protocol:

  • Monsters of Thanatos Tower Lv.7 and above
  • Owl Duke
  • Owl Baron
  • Kasas and Guardians in Thor's Volcano
  • The Guardians inside WoE SE Castles

Mini Boss

Mini Bosses do not actually exist: this is a player coined term, to describe a rare monster, considered as such because they have set spawn intervals ranging from as quick as 10 minutes to as long as 2 hours unlike normal monsters that spawn instanteneously. Similar to an MVP but not quite exactly like, Mini Bosses are usually programmed under a Boss protocol, with some even being able to summon mobs. Unlike MVPs, these monsters are not FFA. However it is ill-mannered to keep these monsters alive and prevent other players from attacking them while artificially extending the respawn time.

Monsters that people tend to classify as Mini Bosses are:

  • Angeling
  • Any * of Thanatos monsters, besides Memory 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 (Also known as Tirfing)
  • Toad
  • Ungoliant
  • Vagabond Wolf
  • Vocal
  • Zealotus


For more information on these visit:

Monsters in Ragnarok Online
Race Angel · Demon · Formless · Insect · Fish · Demi Human · Undead · Dragon · Plant · Brute
Element Holy · Shadow · Neutral · Water · Fire · Wind · Earth · Ghost · Poison · Undead
Boss Protocol · MVP (Free for All) · Size · Kill Stealing · Monster Skills