Four Horsemen

The Four Horsemen are a quartet of immensely powerful entities that personified the four prime concepts of Death.

They can manifest a human form, which can be harmed in manners identical to humans. They are respectively known as: War, Famine, Disease, and The Grim Reaper.

History
It is not fully known as to when and how the Horsemen came into being, as they are given little to no background information. Grim is the only Horseman known to exist before the conception of the universe, as he has existed alongside God ever since the beginning.

Characteristics
The Horsemen are mysterious beings that exist in creation, each representing a different attribute. They have true forms, Grim was implied to have wings and Disease's face couldn't be captured on film.

The Horsemen also have a very deep loyalty to one another that supersedes any allegiance they may have.

Powers and Abilities
The Four Horsemen are among the most powerful entities in existence.

Collective Powers

 * Indestructibility: While Horsemen can take damage in their human forms, they are difficult to destroy.
 * Immortality: They can live forever.
 * Invisibility: The Horsemen are naturally invisible, unless they choose to take form.
 * Manifestation: The Horsemen can manifest into any human form they desire.
 * Superhuman Stamina: The Horsemen don't possess the capacity to tire, and furthermore, do not require food, water, sleep, or oxygen to sustain themselves. Nevertheless, Grim seemed to enjoy eating "cheap food", as Raen puts it.
 * Telekinesis: The Horsemen can manipulate physical matter through power of will.
 * Teleportation: The Horsemen can travel from place to place instantly, without occupying the space in between.
 * Cosmic Awareness: The Horsemen process incredible amount of knowledge and understanding of the universe and its workings.

War

 * Illusion Casting: War can create illusions and hallucinations, which drives people to violence.
 * Super Strength: War can exert tremendous physical force, enough for him to destroy a bridge.
 * Telepathy: War can read the thoughts of other beings.

Famine

 * Gluttony Augmentation: Famine can enhance the sense of hunger in other beings, causing them to seek whatever it is they crave most until it resulted in their destruction.
 * Soul Reading: Famine can determine the state of a soul.
 * Soul Absorption: Famine can eat souls in order to gain his original strength. It doesn't matter if the soul is corrupted or not.
 * Telepathy: Famine can enter people's subconcious.

Disease

 * Biokinesis: Disease can create, manipulate, and control diseases, plagues, infestations, molds, and other ailments. He can also cause instantaneous illness in another being. Disease possesses dominion over ailments. His sickness powers doesn't work on angels, however.
 * Disease Manipulation: Disease can create, manipulate, shape, transform, cause/heal, etc. all forms of diseases, including their severity, contagiousness, methods of spreading, etc. He can control the organisms that spread diseases, including germs, bacteria, virus, or other pathogens on a cellular level, including bacteriophages, microorganisms (microscopic organisms), retroviruses, cells that abnormally grow to make cancerous tumors and cysts, and pathogens that produce genetic mutations.
 * Filth Manipulation: Disease can create, manipulate, shape, transform, etc. any matter that is rotten or filthy (grime, dirtiness, stains, grunge, etc.), ranging from generation and manipulation of pus/ichor, mucus, slime (mucous secretions of animals), earwax, sweat and saliva, to full-out control over dead and decomposed matter; Disease can also control moldy and mildewed matter, spoiled, rancid food, fetid water, polluted air, urine, vomit and feces. He can induce rot, speed it up, negate it or sometimes reverse it, Disease can even induce such foul conditions that makes water filled with bacteria and unsafe, making air (including breath) stifling and smelly, inducing rot and putrefaction in organic matter or even inducing bacterial infection on open wounds.
 * Poison Manipulation: Disease can create, shape and manipulate poisons and poisonous substances. For the sake of clarity: poison, toxin, and venom are terms for any substance that injures the health or destroys life when absorbed into the system: poison is the general word, toxin is a poison produced by an organism (plant, fungus, animal); it is especially used in medicine in reference to disease-causing bacterial secretions, venom is especially used of the poisons secreted by certain animals, usually injected by bite or sting.

Grim

 * Necrokinesis: Grim can kill anything. He once caused a man to collapse after simply brushing shoulders with him. He stated he will reap God but this remains unclear.
 * Nigh-Omniscience: Grim has an almost absolute awareness of the universe, rivaled only by God.
 * Nigh-Omnipotence: Grim has almost absolute power. He was even able to alter the cosmos to cause an eclipse.
 * Resurrection: Grim can bring anything back to life. He could even bring multiple people back to life just with his passing.
 * Weather Manipulation: It is said that Grim is responsible for a lot of floods.

Killing

 * Death's Scythe: It can kill anything.

Trivia

 * War is the first known representant/incarnation of the concept of war, the second being the Greek God, Ares.
 * Famine is the second known representant/incarnation of hunger, the first being one of the Seven Deadly Sins, Beelzebub.