A god in Warhammer Fantasy. Morr is the human god of the dead in the setting. His followers see to funerals, and try to keep the dead at rest as well as do their part (usually by aiding Witch Hunters) against the Undead. He maintains the afterlife for humans in the setting, which is a calm and restful place where sanctuaries for the other human gods also exist to provide whatever afterlives they see fit to give. He also has power over dreams and to a limited extent prophecy. He is the reason skulls are so prevalent on Empire architecture, being that he is a very important being to both commoner and noble.
Despite being a human god, he is described as being the brother of Khaine with whom he has a very poor relationship. He is worshiped as an elf named Sarriel by High Elves and Wood Elves, and as a Dwarf god named Gazul. He has a third name, Forsagh, given to him by gypsies. After Sigmar and Ulric, he is the most popular god in the Empire. His name is often lent to names relating to the undead, like the evil warpstone moon Morrslieb. Morr's got a few knightly orders dedicated to him as well - the Black Guard/Knights of Morr (Black-armoured knights who will use ranged weapons and are under a vow of silence [...outside of actual battle, of course] on their duty to guard graves and Morr-sacred places from the undead to the death), Knights of the Raven (veteran vampire hunters who instead aggressively seek to destroy the undead and their masters that seem to be jinxed [probably due to vampires]), and the Order of the Black Rose (mostly just a knightly order who just uses their black armour to look spooky).
In Vermintide, Saltzpyre often quoted "Morr's scythe" before fighting any of his enemies (usually Stormvermins or Chaos Warriors), that the god of death would claim the souls of their enemies before their enemy gods (chaos gods and horned rat) does.
Of note, one of the neater scenery models GW has released is named after him; the Garden of Morr.
In the End Times, Nagash defeated and consumed the god of the Underworld, Usirian, which seemingly also resulted in the destruction of Morr, indicating Morr and Usirian are the same god with different names.
Or at least that's how it appeared until...
Age of Sigmar
The Mortal Realms' equivelant of Morr is Morrda. Seen as the patron of the Anvils of the Heldenhammer stormhost, legend claims that Morrda is the only death god who has managed to escape being devoured of Nagash. The Lethisian Defenders allegiance abilities from Forbidden Power gives its priests the ability to call upon prayers dedicated to Morrda, suggesting the myth is true and he's still capable of divine intervention.
|The Gods of the Empire|
|Manann - Morr - Myrmidia - Ranald - Rhya - Shallya - Sigmar - Taal - Ulric - Verena|