Description: Creatures hostile to the party, opposing their goals and resisting any effects, especially harmful ones, with hostility or countermeasures (e.g., Defensive Rolls, counterspells, or retaliation).

Behavior: Attacks or undermines the party, making encounters combat-focused or antagonistic.

Example: A goblin raider resists a paralyzing spell and attacks the caster in response.

Mechanic: Always resists harmful effects, likely requiring a contested roll or overcoming defenses.