- 80% chance of being chosen when a random Champion or Unique pack spawns. Unique can also spawn from Evil Urns in Act 5 and Monster Shrines throughout the game.
- Spawn with 3-6 minions.
- One bonus is randomly selected in Normal, two are randomly selected in Nightmare and three are randomly selected in Hell. All permitted bonuses have an equal chance of selection, and are applied in displayed order.  
- Poison Enchanted cannot be randomly selected, but it is a bonus for Achmel the Cursed and Lilith.
- Unique and minion level is base monster level +3: this level is used for chance-to-hit, aura and curse level calculation, selecting relevant MonLvl values to calculate base attack rating and damage of all types, and the clvl/mlvl modifier applied to experience when clvl < mlvl; base level continues to be used to calculate base defense, life and experience.  
- All Unique monsters and their minions give 500% base experience and have the following life:
|% Base Life