Devils are lawful evil outsiders that hail from the plane of Hell. Devils possess a particular suite of traits (unless otherwise noted in a creature's entry).

• Immunity to fire and poison.
• Resistance to acid 10 and cold 10.
• See in Darkness (Su) Some devils can see perfectly in darkness of any kind, even that created by a deeper darkness spell.
• Summon (Sp) Devils share the ability to summon others of their kind, typically another of their type or a small number of less-powerful devils.
• Telepathy.
• Except when otherwise noted, devils speak Celestial, Draconic, and Infernal.
• A devil's natural weapons, as well as any weapons it wields, are treated as lawful and evil for the purpose of resolving damage reduction.