War

You can look me in the eye when I kill you.
— War

Race: Nephilim
Familiar Name: Ruin
Relatives: Strife, Death, Fury

*Darksiders origin used will post link at bottom*
Origin

While not much is known about War's past, it is established that he is feared by both Angels and Demons, and it is hinted that he shares unpleasant histories with many.

Though once amongst the nephilim as they burned worlds under Absalom, War swore loyalty to the Charred Council with his three siblings in the name of preserving the balance.

Before they could fully take up their mantles as the Four Horseman, War and his siblings were sent to the Far Fields and the mysterious being known only as the Horsemaster. The Horsemaster demanded that they discard their weapons as the ancient beasts they sought to tame would bow only to their will. War proposed a wager as to who would tame their horse first. Fury and Strife proceeded to needle War about his tendency to boast, but the Horsemaster criticized them for bickering like children. Death, silent during the exchange, charged into the stampeding horses without a backward glance. He soon grabbed ahold of one horse and mounted it. The Nephilim gained control of it and directed it back to the Horsemaster and his siblings, where he named it Despair as its appearance changed to bone and pale dead flesh to reflect its master. The Red Rider presumably tamed Ruin shortly thereafter.

The four newly named Horsemen were sent to destroy their own kind at Eden, which the nephilim under Absalom were attempting to conquer. War joined his brothers and sister in battle and together they brought about the annihilation of all the nephilim and saved themselves.

Link: http://darksiders.wikia.com/wiki/War