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

Mephiles
Bosstiary · BaneBoss rewardCan hasten itself with a defensive ability.
Creature resistance values; world limits may adjust them. Negative values indicate a weakness.
Paralysis · Invisibility
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 · 1–9 · 30%
gold coin · 1–95 · 2%
stale bread of ancientness · 1 · 1%
poet's fencing quill · 1 · 1%
skyweave coat · 1 · 1%
white knight · 1 · 1%