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

Brain Head
Bosstiary · ArchfoeBoss rewardCreature 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.
crystal coin · 1–3 · 96.3%
diamond · 1–2 · 55.56%
ultimate mana elixir · 1–6 · 51.85%
white gem · 1–2 · 51.85%
supreme health tonic · 1 · 29.63%
cursed bone · 1 · 22.22%
death toll · 1–2 · 18.52%
ivory comb · 1 · 18.52%
ultimate soul essence · 1–6 · 14.81%
moonstone · 1 · 14.81%
spooky hood · 1 · 8.52%
silver hand mirror · 1 · 7.41%
amber with a dragonfly · 1 · 7.41%
phantasmalsigil staff · 1 · 3.7%
ghost claw · 1 · 3.7%
giant amethyst · 1 · 3.7%
enchanted ring of souls · 1 · 3.2%