Cockroach SwarmCreature 2
Source Pathfinder Monster Core 2
Perception +7 (darkvision, scent (imprecise) 60 feet)
Languages none
Skills Acrobatics +8, Stealth +8
Str +2, Dex +4, Con +3, Int -5, Wis +0, Cha -4
AC 18; Fort +9; Reflex +10; Will +6;
HP 26
Speed 20 feet (climb 20 feet, fly 15 feet)
Immunities precision, swarm mind
Weaknesses Area Damage 5, Splash Damage 5
Resistances Bludgeoning 2, Piercing 5, Slashing 5
Swarm Mind
This monster doesn't have a single mind (typically because it's a swarm of smaller creatures), and is immune to mental effects that target only a specific number of creatures. It is still subject to mental effects that affect all creatures in an area.
Swarming Bites
Each enemy in the swarm's space takes 1d8 piercing damage (DC 18 reflex save).
While cockroaches tend to gather in cramped spaces, a disturbed colony is sometimes prone to swarming, where hundreds or even thousands of the insects scurry out of their hiding places in a raft of shiny brown and black carapaces on thousands of skittering legs. Given how disgusting many find cockroaches to be, encountering such a swarm can be alarming to even the most seasoned adventurers. The creatures are relentless when disturbed; in contrast to the insects' normally skittish and harmless nature, as swarms they pursue the creature or creatures that provoked them and harry them with thousands of stinging bites.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
AnimalAn animal is a creature with a relatively low intelligence. It typically doesn't have an Intelligence attribute modifier over –4, can't speak languages, and can't be trained in Intelligence-based skills.
SwarmA swarm is a mass or cloud of creatures that functions as one monster. Its size entry gives the size of the entire mass, though for most swarms the individual creatures that make up that mass are Tiny. A swarm can occupy the same space as other creatures and must do so in order to use its damaging action. A swarm typically has weakness to effects that deal damage over an area (like area spells and splash weapons). Swarms are immune to the grabbed, prone, and restrained conditions.