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Oni

From UO:PvE Wiki

Oni is a monster or encounter npc. About D47–58.

Development source reviewed on 29 October 2026. In-game availability is unverified.

At a glance#

PropertyValue
ClassificationMonster or encounter NPC
DifficultyAbout D47–58
AIAI_Mage
TamingNot marked tameable
Minimum taming skillNot specified
Control slotsNot specified

Attributes and damage#

AttributeValue or rangeInterpretation
Str801–910Source range
Dex151–300Source range
Int171–195Source range
Hits401–530Source range
Damage14–20Source range

Resistances#

AttributeValue or rangeInterpretation
Physical65–80Source range
Fire50–70Source range
Cold35–50Source range
Poison45–70Source range
Energy45–65Source range

Damage types#

AttributeValue or rangeInterpretation
Physical70Source range
Fire10Source range
Energy20Source range

Skills#

AttributeValue or rangeInterpretation
Eval Int100.1–125Source range
Magery96.1–106Source range
Anatomy85.1–95Source range
Magic Resist85.1–100Source range
Tactics86.1–101Source range
Wrestling90.1–100Source range

Difficulty notes#

  • Freshly constructed ordinary wild creature; no paragon conversion, control/summon scaling, equipped/stat offsets, spell effects or special runtime transformations. Endless Journey expansion branches assumed. Missing skill/resistance assignments use zero. Numeric interval endpoints may not co-occur.

Loot eligibility#

Ordinary treasure is conditional on encounter eligibility

One shared difficulty gold/equipment budget can apply when the requested treasure theme is reached and all runtime eligibility checks pass. Conditions on the source loot calls still apply.

Requested gem, potion and scroll supplements use their separate theme/AI/body checks and one shared optional-supplement roll.

This evaluates definite source exclusions and requested themes. It does not inspect live ownership, summoned status, corpse contents or world spawns.

  • Creature is not deleted or a player.
  • Creature is not summoned, controlled or bonded.
  • Creature has no recorded owners.
  • NoKillAwards, IsInvulnerable and Blessed must all be false at generation time.
  • Ordinary loot is generated only once; existing generated gold and ordinary equipment consume that budget.

Difficulty-based loot budget#

For eligible wild creatures that request treasure, the difficulty system replaces ordinary gold and equipment rolls with one budget. A difficulty estimate crossing a tier boundary shows every possible tier. The eligibility and source-call conditions above still apply.

DifficultyGold budgetGuaranteed equipmentExtra item chancePropertiesIntensity
D41–60100–220055%2–325–55

Loot and special drops#

Source calls describe requested themes, conditions and inventory. Ordinary equipment/gold are reconciled through DifficultyLoot; these calls are not additive guaranteed payouts. Runtime dispatch and conditional special rewards still apply.

Drop rules#

Loot requestInterpretationCondition
3 × Filthy Rich loot themeRequests ordinary treasure within one shared difficulty budget; repeated pack requests do not multiply the payout.No condition in extracted rule
PackLootItem(Seed.RandomBonsaiSeed())Requests a newly created themed item. Ordinary equipment is rerolled at death; supply and map limits apply.if (Utility.RandomDouble() < .33)

Taming, resources and other properties#

PropertyValue
Treasure Map Level4
Fame12000
Karma-12000
Can Rummage Corpsestrue
Body241

Matching slayers#

  • Demon Slayer (Super slayer)

Adventure reward families#

  • Demons

Notes#

  • Source type availability does not establish a live spawn, location or current world count.

Related references#

Source notes

Show 32 references

These references identify the reviewed shard files. Source presence does not establish live availability.

  1. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:6
    Type declaration
  2. Projects/UOContent/Mobiles/Difficulty/NpcDifficulty.cs:25
  3. Projects/UOContent/Mobiles/Difficulty/DifficultyLoot.cs:29
  4. Projects/UOContent/Mobiles/Difficulty/DifficultyLoot.cs:37
  5. Projects/UOContent/Mobiles/Difficulty/DifficultyLoot.cs:314
  6. Projects/UOContent/Items/Weapons/SlayerGroup.cs:174
    Super slayer membership
  7. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:14
  8. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:15
  9. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:16
  10. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:18
  11. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:20
  12. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:22
  13. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:23
  14. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:24
  15. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:26
  16. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:27
  17. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:28
  18. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:29
  19. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:30
  20. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:32
  21. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:33
  22. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:34
  23. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:35
  24. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:36
  25. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:37
  26. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:77
  27. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:44
  28. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:63
  29. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:39
  30. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:40
  31. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:62
  32. Projects/UOContent/Mobiles/Monsters/SE/Oni.cs:12

Category: Monsters and NPCs