Daemon (Pathfinder)
If looking for the fiends of Warhammer Fantasy and Warhammer 40,000, see Daemon If looking for the Neutral Evil fiends of Dungeons & Dragons, see Yugoloth
Although not bound to the Great Wheel as Dungeons & Dragons is, Pathfinder still figured it should have an iconic race of Neutral Evil fiends. Going back to the oldest forms of D&D lore, as they tend to do, they drew upon both the original name of the Yugoloths and the early definitions of Neutral Evil.
The Daemons of Pathfinder, therefor, represent nihilistic evil; driven by nothing but pure hatred, daemons despise life and everything that lives. Born from the energies of death, with each different form of death creating a different kind of daemon, they are in many ways the most evil of the three major fiends (Devils/Daemons/Demons), to the point that Devils and Demons have been known to team up against them - they have their differences, but both races agree that they like living and they like having mortals to torment, so the Daemonic plan of annihilating all life throughout the multiverse, then committing mass suicide in order to extinguish life forever... well, they're not exactly on board with that.
The god-like rulers of the daemons are the Four Heralds of Apocalypse; Famine, War, Pestilence and Death.