Each creature has one type, which broadly defines its abilities. Some creatures also have one or more subtypes. A creature cannot violate the rules of its subtype without a special ability or quality to explain the difference—templates can often change a creature's type drastically.
An aberration has a bizarre anatomy, strange abilities, an alien mindset, or any combination of the three.
An animal is a living, nonhuman creature, usually a vertebrate with no magical abilities and no innate capacity for language or culture. Animals usually have additional information on how they can serve as companions. An animal has an Intelligence score of 1 or 2 (no creature with an Intelligence score of 3 or higher can be an animal).
A construct is an animated object or artificially created creature. A construct has the following traits.
• No Constitution score. Any DCs or other statistics that rely on a Constitution score treat a construct as having a score of 10 (no bonus or penalty).
• Immunity to all mind-affecting effects (charms, compulsions, morale effects, patterns, and phantasms).
• Cannot heal damage on its own, but often can be repaired via exposure to a certain kind of effect (see the creature's description for details) or through the use of the Craft Construct feat. Constructs can also be healed through spells such as make whole. A construct with the fast healing special quality still benefits from that quality.
• Not subject to ability damage, ability drain, fatigue, exhaustion, energy drain, or nonlethal damage.
• Immunity to any effect that requires a Fortitude save (unless the effect also works on objects, or is harmless).
• Not at risk of death from massive damage. Immediately destroyed when reduced to 0 hit points or fewer.
• A construct cannot be raised or resurrected.
• A construct is hard to destroy, and gains bonus hit points based on its size (included in its stat block).
• Constructs do not breathe, eat, or sleep.
A dragon is a reptile-like creature, usually winged, with magical or unusual abilities.
A fey is a creature with supernatural abilities and connections to nature or to some other force or place. Fey are usually human-shaped.
A humanoid usually has two arms, two legs, and one head, or a human-like torso, arms, and a head. Humanoids have few or no supernatural or extraordinary abilities, but most can speak and usually have well-developed societies. They are usually Small or Medium (with the exception of giants). Every humanoid creature also has a specific subtype to match its race, such as human, dark folk, or goblinoid.
Humanoids with 1 Hit Die exchange the features of their humanoid Hit Die for the class features of a PC or NPC class. Humanoids with more than 1 Hit Die (such as giants) are the only humanoids who make use of the features of the humanoid type.
Magical beasts are similar to animals but can have Intelligence scores higher than 2 (in which case the creature knows at least one language, but can't necessarily speak). Magical beasts usually have supernatural or extraordinary abilities, but are sometimes merely bizarre in appearance or habits.
Monstrous humanoids are similar to humanoids, but with monstrous or animalistic features. They often have magical abilities as well.
An ooze is an amorphous or mutable creature, usually mindless. An ooze has the following traits.
• Mindless: No Intelligence score, and immunity to all mind-affecting effects (charms, compulsions, phantasms, patterns, and morale effects). Mindless creatures have no skills or feats. An ooze with an Intelligence score loses this trait.
• Oozes eat and breathe, but do not sleep.
An outsider is at least partially composed of the essence (but not necessarily the material) of some plane other than the Material Plane. An outsider has the following traits.
• Unlike most living creatures, an outsider does not have a dual nature—its soul and body form one unit. When an outsider is slain, no soul is set loose. Spells that restore souls to their bodies, such as raise dead, reincarnate, and resurrection, don't work on an outsider. It takes a different magical effect, such as limited wish, wish, miracle, or true resurrection, to restore it to life. An outsider with the native subtype can be raised, reincarnated, or resurrected just as other living creatures can be.
• Outsiders breathe, but do not need to eat or sleep (although they can do so if they wish). Native outsiders breathe, eat, and sleep.
This type comprises vegetable creatures. Note that regular plants, such as one finds growing in gardens and fields, lack Intelligence, Wisdom, and Charisma scores; even though plants are alive, they are objects, not creatures. A plant creature has the following traits.
• Immunity to all mind-affecting effects (charms, compulsions, morale effects, patterns, and phantasms).
• Plants breathe and eat, but do not sleep.
Undead are once-living creatures animated by spiritual or supernatural forces. An undead creature has the following traits.
• No Constitution score. Undead use their Charisma score in place of their Constitution score when calculating hit points, Fortitude saves, and any special ability that relies on Constitution (such as when calculating a breath weapon's DC).
• Immunity to all mind-affecting effects (charms, compulsions, morale effects, patterns, and phantasms).
• Not subject to nonlethal damage, ability drain, or energy drain. Immune to damage to its physical ability scores (Constitution, Dexterity, and Strength), as well as to exhaustion and fatigue effects.
• Cannot heal damage on its own if it has no Intelligence score, although it can be healed. Negative energy (such as an inflict spell) can heal undead creatures. The fast healing special quality works regardless of the creature's Intelligence score.
• Immunity to any effect that requires a Fortitude save (unless the effect also works on objects or is harmless).
• Not at risk of death from massive damage, but is immediately destroyed when reduced to 0 hit points.
• Not affected by raise dead and reincarnate spells or abilities. Resurrection and true resurrection can affect undead creatures. These spells turn undead creatures back into the living creatures they were before becoming undead.
• Undead do not breathe, eat, or sleep.
This type includes insects, arachnids, other arthropods, worms, and similar invertebrates. Vermin have the following traits.
• Mindless: No Intelligence score, and immunity to all mind-affecting effects (charms, compulsions, morale effects, patterns, and phantasms). Mindless creatures have no feats or skills. A vermin-like creature with an Intelligence score is usually either an animal or a magical beast, depending on its other abilities.
• Vermin breathe, eat, and sleep.
Some creatures have one or more subtypes. Subtypes add additional abilities and qualities to a creature.
Aeon Subtype: Aeons are a race of neutral outsiders who roam the planes maintaining the balance of reality. Aeons possess the following traits.
Envisaging (Su) Aeons communicate wordlessly, almost incomprehensibly. Caring little for the wants and desires of other creatures, they have no need to engage in exchanges of dialogue. Instead, aeons mentally scan beings for their thoughts and intentions, and then retaliate with flashes of psychic projections that emit a single concept in response to whatever the other being was thinking. The flash is usually a combination of a visual and aural stimulation, which displays how the aeon perceives future events might work out. For instance, an aeon seeking to raze a city communicates this concept to non-aeons by sending them a vivid image of the city crumbling to ash. An aeon's envisaging functions as a non-verbal form of telepathy. Aeons cannot read the thoughts of any creature immune to mind-affecting effects.
Extension of All (Ex) Through an aeon's connection to the multiverse, it gains access to strange and abstruse knowledge that filters through all existence. Much of the knowledge is timeless, comprised of events long past, present, and potentially even those yet to come. Aeons gain a racial bonus equal to half their racial Hit Dice on all Knowledge skill checks. This same connection also binds them to other aeons. As a result, they can communicate with each other freely, over great distances as if using telepathy. This ability also works across planes, albeit less effectively, allowing the communication of vague impressions or feelings, not specific details or sights. Due to the vast scope of the aeon race's multiplanar concerns, though, even the most dire reports of a single aeon rarely inspire dramatic or immediate action.
Void Form (Su) Though aeons aren't incorporeal, their forms are only a semi-tangible manifestation of something greater. An aeon's void form grants it a deflection bonus equal to 1/4 its Hit Dice (rounded down).
Agathion Subtype: Agathions are beast-aspect outsiders native to Nirvana. They have the following traits.
Air Subtype: This subtype is usually used for outsiders with a connection to the Elemental Plane of Air. Air creatures always have fly speeds and usually have perfect maneuverability. Air creatures treat Fly as a class skill.
Angel Subtype: Angels are a race of celestials, or good outsiders, native to the good-aligned Outer Planes. An angel possesses the following traits.
Aquatic Subtype: These creatures always have swim speeds and can move in water without making Swim checks. An aquatic creature can breathe water. It cannot breathe air unless it has the amphibious special quality. Aquatic creatures always treat Swim as a class skill.
Archon Subtype: Archons are a race of celestials, or good outsiders, native to lawful good-aligned Outer Planes. An archon possesses the following traits.
Augmented Subtype: A creature receives this subtype when something (usually a template) changes its original type. Some creatures (those with an inherited template) are born with this subtype; others acquire it when they take on an acquired template. The augmented subtype is always paired with the creature's original type.
Azata Subtype: Azatas are a race of celestials, or good outsiders, native to chaotic good-aligned Outer Planes. An azata possesses the following traits.
Chaotic Subtype: This subtype is usually applied to outsiders native to the chaotic-aligned Outer Planes. Most creatures that have this subtype also have chaotic alignments; however, if their alignments change, they still retain the subtype. Any effect that depends on alignment affects a creature with this subtype as if the creature had a chaotic alignment, no matter what its alignment actually is. The creature also suffers effects according to its actual alignment. A creature with the chaotic subtype overcomes damage reduction as if its natural weapons and any weapons it wields are chaotically aligned.
Cold Subtype: A creature with the cold subtype has immunity to cold and vulnerability to fire.
Daemon Subtype: Daemons are neutral evil outsiders that eat souls and thrive on disaster and ruin. They have the following traits unless otherwise noted.
Dark Folk Subtype: Dark folk are reclusive subterranean humanoids with an aversion to light.
Demon Subtype: Demons are chaotic evil outsiders from the Abyss. Demons have the following traits.
Devil Subtype: Devils are lawful evil outsiders that hail from the plane of Hell. Devils possess the following traits.
Earth Subtype: This subtype is usually used for outsiders with a connection to the Elemental Plane of Earth. Earth creatures usually have burrow speeds, and most earth creatures can burrow through solid rock. Earth creatures with a burrow speed possess tremorsense.
Elemental Subtype: An elemental is a being composed entirely from one of the four classical elements: air, earth, fire, or water. An elemental has the following features.
Evil Subtype: This subtype is usually applied to outsiders native to the evil-aligned Outer Planes. Evil outsiders are also called fiends. Most creatures that have this subtype also have evil alignments; however, if their alignments change, they still retain the subtype. Any effect that depends on alignment affects a creature with this subtype as if the creature has an evil alignment, no matter what its alignment actually is. The creature also suffers effects according to its actual alignment. A creature with the evil subtype overcomes damage reduction as if its natural weapons and any weapons it wields are evil-aligned.
Extraplanar Subtype: This subtype is applied to any creature when it is on a plane other than its native plane. A creature that travels the planes can gain or lose this subtype as it goes from plane to plane. Monster entries assume that encounters with creatures take place on the Material Plane, and every creature whose native plane is not the Material Plane has the extraplanar subtype (but would not have it when on its home plane). Every extraplanar creature in this book has a home plane mentioned in its description. Creatures not labeled as extraplanar are natives of the Material Plane, and they gain the extraplanar subtype if they leave the Material Plane. No creature has the extraplanar subtype when it is on a transitive plane, such as the Astral Plane, the Ethereal Plane, or the Plane of Shadow.
Fire Subtype: A creature with the fire subtype has immunity to fire and vulnerability to cold.
Giant Type: A giant is a humanoid creature of great strength, usually of at least Large size. Giants have racial Hit Dice and never substitute such Hit Dice for class levels like some humanoids. Giants have low-light vision, and treat Intimidate and Perception as class skills.
Gnome Subtype: This subtype is applied to gnomes and creatures related to gnomes. Creatures with the gnome subtype have low-light vision.
Good Subtype: This subtype is usually applied to outsiders native to the good-aligned Outer Planes. Most creatures that have this subtype also have good alignments; however, if their alignments change, they still retain the subtype. Any effect that depends on alignment affects a creature with this subtype as if the creature has a good alignment, no matter what its alignment actually is. The creature also suffers effects according to its actual alignment. A creature with the good subtype overcomes damage reduction as if its natural weapons and any weapons it wields are good-aligned.
Incorporeal Subtype: An incorporeal creature has no physical body. An incorporeal creature is immune to critical hits and precision-based damage (such as sneak attack damage) unless the attacks are made using a weapon with the ghost touch special weapon quality. In addition, creatures with the incorporeal subtype gain the incorporeal special quality.
Inevitable Subtype: Inevitables are construct-like outsiders built by the axiomites to enforce law. They have the following traits.
Lawful Subtype: This subtype is usually applied to outsiders native to the lawful-aligned Outer Planes. Most creatures that have this subtype also have lawful alignments; however, if their alignments change, they still retain the subtype. Any effect that depends on alignment affects a creature with this subtype as if the creature had a lawful alignment, no matter what its alignment actually is. The creature also suffers effects according to its actual alignment. A creature with the lawful subtype overcomes damage reduction as if its natural weapons and any weapons it wields are lawful-aligned.
Native Subtype: This subtype is applied only to outsiders. These creatures have mortal ancestors or a strong connection to the Material Plane and can be raised, reincarnated, or resurrected just as other living creatures can be. Creatures with this subtype are native to the Material Plane. Unlike true outsiders, native outsiders need to eat and sleep.
Nightshade Subtype: Nightshades are monstrous undead composed of shadow and evil. They have the following traits.
Shapechanger Subtype: A shapechanger has the supernatural ability to assume one or more alternate forms. Many magical effects allow some kind of shapeshifting, and not every creature that can change shape has the shapechanger subtype.
Protean Subtype: Proteans are serpentine outsiders of pure chaos. They have the following traits.
Qlippoth Subtype: Qlippoth are chaotic evil outsiders from the deepest reaches of the Abyss. They have the following traits.
Swarm Subtype: A swarm is a collection of Fine, Diminutive, or Tiny creatures that acts as a single creature. A swarm has the characteristics of its type, except as noted here. A swarm has a single pool of Hit Dice and hit points, a single initiative modifier, a single speed, and a single Armor Class. A swarm makes saving throws as a single creature. A single swarm occupies a square (if it is made up of nonflying creatures) or a cube (of flying creatures) 10 feet on a side, but its reach is 0 feet, like its component creatures. In order to attack, it moves into an opponent's space, which provokes an attack of opportunity. A swarm can occupy the same space as a creature of any size, since it crawls all over its prey. A swarm can move through squares occupied by enemies and vice versa without impediment, although the swarm provokes an attack of opportunity if it does so. A swarm can move through cracks or holes large enough for its component creatures.
A swarm of Tiny creatures consists of 300 nonflying creatures or 1,000 flying creatures. A swarm of Diminutive creatures consists of 1,500 nonflying creatures or 5,000 flying creatures. A swarm of Fine creatures consists of 10,000 creatures, whether they are flying or not. Swarms of nonflying creatures include many more creatures than could normally fit in a 10-foot square based on their normal space, because creatures in a swarm are packed tightly together and generally crawl over each other and their prey when moving or attacking. Larger swarms are represented by multiples of single swarms. The area occupied by a large swarm is completely shapeable, though the swarm usually remains in contiguous squares.
Swarm Traits: A swarm has no clear front or back and no discernible anatomy, so it is not subject to critical hits or flanking. A swarm made up of Tiny creatures takes half damage from slashing and piercing weapons. A swarm composed of Fine or Diminutive creatures is immune to all weapon damage. Reducing a swarm to 0 hit points or less causes it to break up, though damage taken until that point does not degrade its ability to attack or resist attack. Swarms are never staggered or reduced to a dying state by damage. Also, they cannot be tripped, grappled, or bull rushed, and they cannot grapple an opponent.
A swarm is immune to any spell or effect that targets a specific number of creatures (including single-target spells such as disintegrate), with the exception of mind-affecting effects (charms, compulsions, morale effects, patterns, and phantasms) if the swarm has an Intelligence score and a hive mind. A swarm takes half again as much damage (+50%) from spells or effects that affect an area, such as splash weapons and many evocation spells.
Swarms made up of Diminutive or Fine creatures are susceptible to high winds, such as those created by a gust of wind spell. For purposes of determining the effects of wind on a swarm, treat the swarm as a creature of the same size as its constituent creatures. A swarm rendered unconscious by means of nonlethal damage becomes disorganized and dispersed, and does not reform until its hit points exceed its nonlethal damage.
Swarm Attack: Creatures with the swarm subtype don't make standard melee attacks. Instead, they deal automatic damage to any creature whose space they occupy at the end of their move, with no attack roll needed. Swarm attacks are not subject to a miss chance for concealment or cover. A swarm's stat block has “swarm” in the Melee entries, with no attack bonus given.
A swarm's attacks are nonmagical, unless the swarm's description states otherwise. Damage reduction sufficient to reduce a swarm attack's damage to 0, being incorporeal, or other special abilities usually give a creature immunity (or at least resistance) to damage from a swarm. Some swarms also have acid, blood drain, poison, or other special attacks in addition to normal damage.
Swarms do not threaten creatures, and do not make attacks of opportunity with their swarm attack. However, they distract foes whose squares they occupy, as described below.
Swarms possess the distraction universal monster rule. Spellcasting or concentrating on spells within the area of a swarm requires a caster level check (DC 20 + spell level). Using skills that involve patience and concentration requires a DC 20 Will save.
Water Subtype: This subtype is usually used for outsiders with a connection to the Elemental Plane of Water. Creatures with the water subtype always have swim speeds and can move in water without making Swim checks. A water creature can breathe underwater and can usually breathe air as well. Water creatures treat the Swim skill as a class skill.