Base creature values. Events, world settings, difficulty and loot bonuses can change an encounter.

Twisterror
Bosstiary · ArchfoeBoss rewardCreature resistance values; world limits may adjust them. Negative values indicate a weakness.
Paralysis · Transformation · Invisibility · Bleeding
Base chance per roll, not a guaranteed reward. Bonuses, world multipliers and boss participation change the result. Charged items use their own quantities. Container contents also require the container to drop.
platinum coin · 1–50 · 99%
spellreaper staff totem · 1 · 7.5%
demonic matter · 1 · 7%
skin of Twisterror · 1 · 1%