From Pathfinder Society Scenario #6-10: Once in Whispers, which isn't enabled.

Brain Guzzler

CREATURE 5

RARE LARGE UNDEAD UNHOLY ZOMBIE

Perception +12; darkvision

Languages Common, Necril

Skills Athletics +17

Str +3, Dex +2, Con +0, Int +2, Wis +0, Cha -2

AC 19; Fort +9, Ref +7, Will +12

HP 91, void healing; Immunities bleed; Weaknesses electricity 10, slashing 10

Cybernetics

The cybernetics of a brain guzzler can be disabled for 1 hour with a successful Disable a Device check. A brain guzzler's cybernetics are disabled for 1 hour if it takes any electricity damage. A brain guzzler with disabled cybernetics is Slowed 1 and can't use reactions.

Guzzle

Trigger The brain guzzler kills an enemy

Effect The brain guzzler breaks open its victim's skull and eats the brain. The brain guzzler gains knowledge of the victim's memories. The victim can no longer be raised from the dead by any method that requires an intact corpse and rises as a zombie shambler the next day at dawn.

Void Healing

A creature with void healing draws health from void energy rather than vitality energy. It is damaged by vitality damage and is not healed by vitality healing effects. It does not take void damage, and it is healed by void effects that heal undead.

Speed 25 feet

Melee Fist +12 (unarmed), Damage 2d6+5 bludgeoning

Pathfinder Society Scenario #6-10: Once in WhispersORC