Vrisk

Vrisk's smooth head does not have ears, so he's Deaf. He automatically critically fails any Perception checks that require hearing and is immune to auditory effects. He can supply verbal components for casting spells and command components for activating magic items, but if he performs an action he isn't accustomed to that involves auditory elements, he must succeed at a DC 5 flat or the action is lost. He has both the Sign Language and Read Lips skill feats.

Harmed by void (3d8 untyped, 2d8 untyped from areas or persistent damage); healed by vitality (area 2d6 healing HP); slowed by emotion A golem is immune to spells and magical abilities other than its own, but each type of golem is affected by a few types of magic in special ways. These exceptions are listed in shortened form in the golem's stat block, with the full rules appearing here. If an entry lists multiple types (such as "cold and water"), either type of spell can affect the golem. • Harmed By Any magic of this type that targets the golem causes it to take the listed amount of damage (this damage has no type) instead of the usual effect. If the golem starts its turn in an area of magic of this type or is affected by a persistent effect of the appropriate type, it takes the damage listed in the parenthetical. • Healed By Any magic of this type that targets the golem makes the golem lose the slowed condition and gain HP equal to half the damage the spell would have dealt. If the golem starts its turn in an area of this type of magic, it gains the HP listed in the parenthetical. • Slowed By Any magic of this type that targets the golem causes it to be Slowed 1 for 2d6 rounds instead of the usual effect. If the golem starts its turn in an area of this type of magic, it's slowed 1 for that round. • Vulnerable To Each golem is vulnerable to one or more specific spells, with the effects described in its stat block.

Vrisk is affected by the Daze spell as if he was a living creature

If targeted by Redact or any other spell that erases text, Vrisk must succeed at a DC 20 will save or immediately die as the rune on his forehead is erased.